Problem 73
A salt of strong acid and a weak base is dissolved in water. Its hydrolysis in solution is (1) not affected by heating (2) increased by adding a strong acid (3) suppressed by adding a strong acid (4) suppressed by dilution
Problem 73
The equilibrium constant for the reaction \(\mathrm{Br}_{2} \rightleftharpoons\) \(2 \mathrm{Br}\) at \(500 \mathrm{~K}\) and \(700 \mathrm{~K}\) are \(1 \times 10^{\circ}\) and \(1 \times 10^{5}\), respectively. The reaction is (1) endothermic (2) exothermic (3) fast (4) slow
Problem 74
IIydrolysis constant of a salt of weak acid and weak basc is inversely proportional to (1) Dissociation constant of weak acid (2) Dissociation constant of weak base (3) lonic product of water (4) Dissociation constant of both weak acid and weak base
Problem 75
The aqueous solution of a salt is alkalinc. This shows that salt is made from (1) \(\Lambda\) strong acid and strong base (2) \(\Lambda\) strong acid and weak base (3) \(\Lambda\) wcak acid and weak base (4) \(\Lambda\) weak acid and strong base
Problem 77
Which of the following statements is falsc? (1) Hydrolysis of the salt of strong acid and weak base is called cationic hydrolysis (2) Hydrolysis of the salt of weak acid and strong base is known as anionic hydrolysis (3) Aqueous solution of aluminium chloride is acidic due to hydrolysis of \(\mathrm{Al}^{3}\) ion (4) Aqueous solution of sodium carbonate is basic due to hydrolysis of \(\mathrm{Na}\) ion
Problem 78
\(\Lambda \mathrm{B}_{2}\) dissociates as \(\Lambda \mathrm{B}_{2}(\mathrm{~g}) \rightleftharpoons \Lambda \mathrm{B}(\mathrm{g})+\mathrm{B}(\mathrm{g})\). When the initial pressure of \(\Lambda \mathrm{B}_{2}\) is \(600 \mathrm{~mm} \mathrm{IIg}\), the total cquilibrium pressure is \(800 \mathrm{~mm} \mathrm{~kg}\). Calculate \(\mathrm{K}_{\mathrm{p}}\) for the reaction assuming that the volume of the system remains unchangcd. (1) 50 (2) 100 (3) \(166.8\) (4) 400
Problem 80
The correct statement is (1) \(\mathrm{NII}_{4} \mathrm{Cl}\) gives an alkalinc solution in water (2) \(\mathrm{CII}_{3}\) COONa gives an acidic solution in water (3) \(\mathrm{CII}_{3} \mathrm{COOII}\) is a weak acid (4) \(\mathrm{NII}_{4} \mathrm{OII}\) is a strong base
Problem 81
For the reaction \(2 \mathrm{X}(\mathrm{g})+\mathrm{Y}(\mathrm{g}) \rightleftharpoons 2 \mathrm{Z}(\mathrm{g}) ; \Delta H=\) 80 kcal. The highest yicld of \(Z\) at cquilibrium occurs at (1) \(1000 \mathrm{~atm}\) and \(500^{\circ} \mathrm{C}\) (2) \(500 \mathrm{~atm}\) and \(500^{\circ} \mathrm{C}\) (3) \(1000 \mathrm{~atm}\) and \(100^{\circ} \mathrm{C}\) (4) \(500 \mathrm{~atm}\) and \(100^{\circ} \mathrm{C}\)
Problem 83
Docs Le Chatelier's principle predict a change of equilibrium concentration for the following reaction if the gas mixture is compressed. \(\mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}_{2}(\mathrm{~g})\) (1) Ycs, backward reaction is favoured. (2) Yes, forward reaction is favoured. (3) No changc. (4) No information.
Problem 84
The \(\mathrm{p} K_{\mathrm{s}}\) of a weak acid \(\mathrm{HA}\) is greater than the \(\mathrm{p} K_{\mathrm{b}}\) value of a weak base \(\mathrm{BOH}\). An aqueous solution of the salt \(\mathrm{AB}\) formed by the neutralization of this acid by the base will be (1) neutral (2) basic (3) alkaline (4) acidic if the solution is dilute
