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At 90 C, pure water has [H+]=10−6M. The value of Kw at 90 C is

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At 90 C, pure water has [H+]=10−6M. The value of Kw at 90 C is

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The pH of 1N water is

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The pH of 1N water is

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which of the following is a conjugated acid base pair

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which of the following is a conjugated acid base pair

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Among the following, weakest Lewis Base is

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Among the following, weakest Lewis Base is

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conjugate acid of NH2- is

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conjugate acid of NH2- is

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Among the following the weakest base is

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Among the following the weakest base is

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#bookcondition #collegestudents #collegelife

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The conjugate base of H2PO4− is:

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The conjugate base of H2PO4− is:

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Aqueous solution of HCl has the pH=4. Its molarity would be:

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Aqueous solution of HCl has the pH=4. Its molarity would be:

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pH of completely dissociated 0.005m H2SO4 is

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pH of completely dissociated 0.005m H2SO4 is

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World War 1 (short video)

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the pH of 0.02 m solution of hydrochloric acid is

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the pH of 0.02 m solution of hydrochloric acid is

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NaOH(aq.), HCl(aq) and NaCl(aq.) have concentration of 10−3 M each. Their pH will be respectively:

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NaOH(aq.), HCl(aq) and NaCl(aq.) have concentration of 10−3 M each. Their pH will be respectively:

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The pH of N/100 HCl would be

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The pH of N/100 HCl would be

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Electrolytes when dissolved in water dissociate into their constituent ions.The degree of dissociati

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Electrolytes when dissolved in water dissociate into their constituent ions.The degree of dissociati

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A monoprotic acid in 1.00 M solution is 0.01% ionised. The dissociation of this acid is:

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A monoprotic acid in 1.00 M solution is 0.01% ionised. The dissociation of this acid is:

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Concentration CN in 0.1 M HCN is [Ka = 4×10-10 ]

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Concentration CN in 0.1 M HCN is [Ka = 4×10-10 ]

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The degree of dissociation of weak electrolyte increases by :

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The degree of dissociation of weak electrolyte increases by :

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The hydrogen ion concentration of 0.1 N solution of CH3COOH which is 30% dissociation is:

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The hydrogen ion concentration of 0.1 N solution of CH3COOH which is 30% dissociation is:

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The dissociation constant of a weak acid HA is 1×10−5 . Its concentration is 0.1 M. pH of that

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The dissociation constant of a weak acid HA is 1×10−5 . Its concentration is 0.1 M. pH of that

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Aqueous solution of sodium acetate is

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Aqueous solution of sodium acetate is

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which of the following aqueous solution will have a ph less than 7.0

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which of the following aqueous solution will have a ph less than 7.0

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which of the following aqueous solution will have a pH less than 7.0

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which of the following aqueous solution will have a pH less than 7.0

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pH of a 0.001M NaOH solution will be:

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pH of a 0.001M NaOH solution will be:

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A solution of MgCl2 in water has pH

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A solution of MgCl2 in water has pH

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Which of the following is an acid salt?

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Which of the following is an acid salt?

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Which of the following solutions can act as a buffer?

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Which of the following solutions can act as a buffer?

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One weak acid (like CH 3 COOH) and its strong base together with salt (like CH3COONa) is a buffer

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One weak acid (like CH 3 COOH) and its strong base together with salt (like CH3COONa) is a buffer

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50mL of 2N acetic acid mixed with 10mL of 1N sodium acetate solution will have an approximate pH:

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50mL of 2N acetic acid mixed with 10mL of 1N sodium acetate solution will have an approximate pH:

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A solution which is 10−3M each in Mn2+,Fe2+ and Hg2+ is treated with 10−16 M sulphide ion, If Ksp of

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A solution which is 10−3M each in Mn2+,Fe2+ and Hg2+ is treated with 10−16 M sulphide ion, If Ksp of

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The solubility of CaF2 is S moles/litre. Then its solubility product is....

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The solubility of CaF2 is S moles/litre. Then its solubility product is....

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On passing a current of HCl gas in a saturated solution of NaCl, the solubility of NaCl

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On passing a current of HCl gas in a saturated solution of NaCl, the solubility of NaCl

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The solubility of CaF2 is 2×10−4 mole/litre. Its solubility product is:

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The solubility of CaF2 is 2×10−4 mole/litre. Its solubility product is:

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Oxygen shows oxidation state of -1 in the compound :

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Oxygen shows oxidation state of -1 in the compound :

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The oxidation number of in the complex [Pt(C2H4)Cl3] is_.

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The oxidation number of in the complex [Pt(C2H4)Cl3] is_.

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which one is correctly matched, substance O.N. of Sulphur

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which one is correctly matched, substance O.N. of Sulphur

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The oxidation state of molybdenum in its oxo complex species[Mo2O4 (C2H4)2(H2O2 )]2−].

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The oxidation state of molybdenum in its oxo complex species[Mo2O4 (C2H4)2(H2O2 )]2−].

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Oxidation numbers of two Cl atoms in belaching powder, CaOCl2, are

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Oxidation numbers of two Cl atoms in belaching powder, CaOCl2, are

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Co304 is an oxide of Co (II) and Co (III). If its formula is CoxII CoyIII , then the values of x

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Co304 is an oxide of Co (II) and Co (III). If its formula is CoxII CoyIII , then the values of x

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Oxidation state of Cr in CrO5 is

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Oxidation state of Cr in CrO5 is

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In [Cr(O2)(NH3)4 (H2O)]Cl2 , oxidation number of Cr is +3 then, O 2 will be in the form of :

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In [Cr(O2)(NH3)4 (H2O)]Cl2 , oxidation number of Cr is +3 then, O 2 will be in the form of :

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In wustite Fe0.93O, the oxidation no. of iron is

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In wustite Fe0.93O, the oxidation no. of iron is

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The oxidation number of platinum in [Pt(C2H4)3]- is

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The oxidation number of platinum in [Pt(C2H4)3]- is

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Oxidation number of sodium in sodium amalgam is

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Oxidation number of sodium in sodium amalgam is

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What is the oxidation number of carbon in carbon suboxide [C3O2]?

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What is the oxidation number of carbon in carbon suboxide [C3O2]?

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Oxidation number of sulphur in Na2S2O3 would be :

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Oxidation number of sulphur in Na2S2O3 would be :

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One mole of iron [55.8gm], when oxidised to +2 oxidation states gives up:

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One mole of iron [55.8gm], when oxidised to +2 oxidation states gives up:

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select the compound in which the oxidation number of oxygen is –1

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select the compound in which the oxidation number of oxygen is –1

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The sum of oxidation states of sulphur in H2S2O8 is

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The sum of oxidation states of sulphur in H2S2O8 is

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In substance Mg(HXO3), the oxidation number of X is

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In substance Mg(HXO3), the oxidation number of X is

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The oxidation number of iron in potassium ferricyanide K3[Fe(CN)6] is

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The oxidation number of iron in potassium ferricyanide K3[Fe(CN)6] is

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Oxidation number of Xe in XeF5- is

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Oxidation number of Xe in XeF5- is

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calculate the oxidation number of chlorine in perchloric acid, HClO4, a strong oxidizing agent.

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calculate the oxidation number of chlorine in perchloric acid, HClO4, a strong oxidizing agent.

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For the redox reaction, MnO4− +C2O42− + H + → Mn 2+ + CO2 +H2O, the correct coefficients of

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For the redox reaction, MnO4− +C2O42− + H + → Mn 2+ + CO2 +H2O, the correct coefficients of

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The value of n in MnO4− + 8H + ne − →Mn2+ + 4H2O is

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The value of n in MnO4− + 8H + ne − →Mn2+ + 4H2O is

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What is the value of n in the following equation? Cr(OH)4− +OH− → CrO42− +H2O + ne −

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What is the value of n in the following equation? Cr(OH)4− +OH− → CrO42− +H2O + ne −

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For the redox reaction, Zn +NO3− →Zn2+ +NH4+ in basic medium, coefficients of Zn, NO3− and OH-

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For the redox reaction, Zn +NO3− →Zn2+ +NH4+ in basic medium, coefficients of Zn, NO3− and OH-

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In the balanced equation MnO4− + H+ +C2O42− →Mn2+ +CO2 +H2O, the moles of CO2 formed are :-

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In the balanced equation MnO4− + H+ +C2O42− →Mn2+ +CO2 +H2O, the moles of CO2 formed are :-

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In the balanced equation MnO4− + H+ +C2O42− →Mn2+ +CO2 +H2O, the moles of CO2 formed are :-

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In the balanced equation MnO4− + H+ +C2O42− →Mn2+ +CO2 +H2O, the moles of CO2 formed are :-

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The number of electrons required to balance the following equation is: NO3− +4H+ +e − →2H2O + NO

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The number of electrons required to balance the following equation is: NO3− +4H+ +e − →2H2O + NO

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For reaction : Cr2O72− +14H + +6e − →2Cr 3+ +7H 2 O

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For reaction : Cr2O72− +14H + +6e − →2Cr 3+ +7H 2 O

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Oxidising product of substance Na3AsO3 would be:

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Oxidising product of substance Na3AsO3 would be:

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2KMnO4 +5H2S+6H+ →2Mn2+ +2K+ +5S+8H2O. In the above reaction, how many electrons would be

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2KMnO4 +5H2S+6H+ →2Mn2+ +2K+ +5S+8H2O. In the above reaction, how many electrons would be

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The number of electrons required to balance the following equation is:NO3− + 4H+ +e − →2H2O+NO

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The number of electrons required to balance the following equation is:NO3− + 4H+ +e − →2H2O+NO

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conductivity of a strong electrolyte, increases on dilution(2)Does not change considerably

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conductivity of a strong electrolyte, increases on dilution(2)Does not change considerably

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The standard cell potential of Zn∣Zn2+ ∣∣Cu 2+ (aq)∣Cu cell is 1.10 V. The maximum work obtained by

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A standard hydrogen electrode has zero electrode potential because

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A standard hydrogen electrode has zero electrode potential because

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Which of the following metal does not react with the solution of copper sulphate

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Which of the following metal does not react with the solution of copper sulphate

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The standard reduction potentials at 298 K for the following half-cell reactions are given:Zn 2+

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The standard reduction potentials at 298 K for the following half-cell reactions are given:Zn 2+

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If a strip of copper (Cu) metal is placed in a solution of ferrous sulphate

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If a strip of copper (Cu) metal is placed in a solution of ferrous sulphate

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The emf of a galvanic cell, with electrode potentials of silver =+0.80 V and that of copper =+0.34 V

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Saturated solution of KNO3 is used to make salt bridge because:

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A cell from the following which converts electrical energy into chemical energy

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A cell from the following which converts electrical energy into chemical energy

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Solution Q 41 II Determine the osmotic pressure of a solution prepared by dissolving 25 mg K2SO4

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NEET 2021 II CHEMISTRY ll Which one of the following has maximum number of atoms?

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