Hydrolysis of Salts
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CHXI07:EQUILIBRIUM

314723 \({\mathrm{\mathrm{pK}_{\mathrm{a}}}}\) of a weak acid (HA) and \({\mathrm{\mathrm{pK}_{\mathrm{b}}}}\) of a weak base \({\mathrm{(\mathrm{BOH})}}\) are 3.2 and 3.4 respectively. The \({\mathrm{\mathrm{pH}_{\text {}}}}\) of their salt ( \({\mathrm{A \mathrm{~B}}}\) ) solution is ____ .

1 7
2 3.5
3 6.9
4 10
CHXI07:EQUILIBRIUM

314724 Assertion :
Solution of salts formed from strong bases and weak acids are alkaline.
Reason :
\(\mathrm{pH}\) of such solution is greater than 7 .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI07:EQUILIBRIUM

314725 The hydrolysis constant of ammonium acetate is given by

1 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{a}}}}}\)
2 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{b}}}}}\)
3 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{a}}}{\rm{.}}{{\rm{K}}_{\rm{b}}}}}\)
4 \({{\rm{K}}_{\rm{a}}}{\rm{.}}{{\rm{K}}_{\rm{b}}}\)
CHXI07:EQUILIBRIUM

314726 Which of the following salts is the basic in aqueous solution?

1 \(\mathrm{CH}_{3} \mathrm{COOK}\)
2 \(\mathrm{FeCl}_{3}\)
3 \(\mathrm{Pb}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}\)
4 \(\mathrm{Al}(\mathrm{CN})_{3}\)
CHXI07:EQUILIBRIUM

314727 A weak acid \(\mathrm{HX}\) has \({{\rm{K}}_{\rm{a}}}{\rm{ = 1}}{\rm{.0 \times 1}}{{\rm{0}}^{{\rm{ - 5}}}}\) and it forms a salt \(\mathrm {NaX}\) when treated with caustic soda. The percentage of hydrolysis of a \({\text{0}}{\text{.1 M NaX}}\) solution is

1 \(0.1 \%\)
2 \(0.01 \%\)
3 \(0.001 \%\)
4 \(1 \%\)
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CHXI07:EQUILIBRIUM

314723 \({\mathrm{\mathrm{pK}_{\mathrm{a}}}}\) of a weak acid (HA) and \({\mathrm{\mathrm{pK}_{\mathrm{b}}}}\) of a weak base \({\mathrm{(\mathrm{BOH})}}\) are 3.2 and 3.4 respectively. The \({\mathrm{\mathrm{pH}_{\text {}}}}\) of their salt ( \({\mathrm{A \mathrm{~B}}}\) ) solution is ____ .

1 7
2 3.5
3 6.9
4 10
CHXI07:EQUILIBRIUM

314724 Assertion :
Solution of salts formed from strong bases and weak acids are alkaline.
Reason :
\(\mathrm{pH}\) of such solution is greater than 7 .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI07:EQUILIBRIUM

314725 The hydrolysis constant of ammonium acetate is given by

1 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{a}}}}}\)
2 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{b}}}}}\)
3 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{a}}}{\rm{.}}{{\rm{K}}_{\rm{b}}}}}\)
4 \({{\rm{K}}_{\rm{a}}}{\rm{.}}{{\rm{K}}_{\rm{b}}}\)
CHXI07:EQUILIBRIUM

314726 Which of the following salts is the basic in aqueous solution?

1 \(\mathrm{CH}_{3} \mathrm{COOK}\)
2 \(\mathrm{FeCl}_{3}\)
3 \(\mathrm{Pb}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}\)
4 \(\mathrm{Al}(\mathrm{CN})_{3}\)
CHXI07:EQUILIBRIUM

314727 A weak acid \(\mathrm{HX}\) has \({{\rm{K}}_{\rm{a}}}{\rm{ = 1}}{\rm{.0 \times 1}}{{\rm{0}}^{{\rm{ - 5}}}}\) and it forms a salt \(\mathrm {NaX}\) when treated with caustic soda. The percentage of hydrolysis of a \({\text{0}}{\text{.1 M NaX}}\) solution is

1 \(0.1 \%\)
2 \(0.01 \%\)
3 \(0.001 \%\)
4 \(1 \%\)
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CHXI07:EQUILIBRIUM

314723 \({\mathrm{\mathrm{pK}_{\mathrm{a}}}}\) of a weak acid (HA) and \({\mathrm{\mathrm{pK}_{\mathrm{b}}}}\) of a weak base \({\mathrm{(\mathrm{BOH})}}\) are 3.2 and 3.4 respectively. The \({\mathrm{\mathrm{pH}_{\text {}}}}\) of their salt ( \({\mathrm{A \mathrm{~B}}}\) ) solution is ____ .

1 7
2 3.5
3 6.9
4 10
CHXI07:EQUILIBRIUM

314724 Assertion :
Solution of salts formed from strong bases and weak acids are alkaline.
Reason :
\(\mathrm{pH}\) of such solution is greater than 7 .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI07:EQUILIBRIUM

314725 The hydrolysis constant of ammonium acetate is given by

1 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{a}}}}}\)
2 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{b}}}}}\)
3 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{a}}}{\rm{.}}{{\rm{K}}_{\rm{b}}}}}\)
4 \({{\rm{K}}_{\rm{a}}}{\rm{.}}{{\rm{K}}_{\rm{b}}}\)
CHXI07:EQUILIBRIUM

314726 Which of the following salts is the basic in aqueous solution?

1 \(\mathrm{CH}_{3} \mathrm{COOK}\)
2 \(\mathrm{FeCl}_{3}\)
3 \(\mathrm{Pb}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}\)
4 \(\mathrm{Al}(\mathrm{CN})_{3}\)
CHXI07:EQUILIBRIUM

314727 A weak acid \(\mathrm{HX}\) has \({{\rm{K}}_{\rm{a}}}{\rm{ = 1}}{\rm{.0 \times 1}}{{\rm{0}}^{{\rm{ - 5}}}}\) and it forms a salt \(\mathrm {NaX}\) when treated with caustic soda. The percentage of hydrolysis of a \({\text{0}}{\text{.1 M NaX}}\) solution is

1 \(0.1 \%\)
2 \(0.01 \%\)
3 \(0.001 \%\)
4 \(1 \%\)
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CHXI07:EQUILIBRIUM

314723 \({\mathrm{\mathrm{pK}_{\mathrm{a}}}}\) of a weak acid (HA) and \({\mathrm{\mathrm{pK}_{\mathrm{b}}}}\) of a weak base \({\mathrm{(\mathrm{BOH})}}\) are 3.2 and 3.4 respectively. The \({\mathrm{\mathrm{pH}_{\text {}}}}\) of their salt ( \({\mathrm{A \mathrm{~B}}}\) ) solution is ____ .

1 7
2 3.5
3 6.9
4 10
CHXI07:EQUILIBRIUM

314724 Assertion :
Solution of salts formed from strong bases and weak acids are alkaline.
Reason :
\(\mathrm{pH}\) of such solution is greater than 7 .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI07:EQUILIBRIUM

314725 The hydrolysis constant of ammonium acetate is given by

1 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{a}}}}}\)
2 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{b}}}}}\)
3 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{a}}}{\rm{.}}{{\rm{K}}_{\rm{b}}}}}\)
4 \({{\rm{K}}_{\rm{a}}}{\rm{.}}{{\rm{K}}_{\rm{b}}}\)
CHXI07:EQUILIBRIUM

314726 Which of the following salts is the basic in aqueous solution?

1 \(\mathrm{CH}_{3} \mathrm{COOK}\)
2 \(\mathrm{FeCl}_{3}\)
3 \(\mathrm{Pb}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}\)
4 \(\mathrm{Al}(\mathrm{CN})_{3}\)
CHXI07:EQUILIBRIUM

314727 A weak acid \(\mathrm{HX}\) has \({{\rm{K}}_{\rm{a}}}{\rm{ = 1}}{\rm{.0 \times 1}}{{\rm{0}}^{{\rm{ - 5}}}}\) and it forms a salt \(\mathrm {NaX}\) when treated with caustic soda. The percentage of hydrolysis of a \({\text{0}}{\text{.1 M NaX}}\) solution is

1 \(0.1 \%\)
2 \(0.01 \%\)
3 \(0.001 \%\)
4 \(1 \%\)
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CHXI07:EQUILIBRIUM

314723 \({\mathrm{\mathrm{pK}_{\mathrm{a}}}}\) of a weak acid (HA) and \({\mathrm{\mathrm{pK}_{\mathrm{b}}}}\) of a weak base \({\mathrm{(\mathrm{BOH})}}\) are 3.2 and 3.4 respectively. The \({\mathrm{\mathrm{pH}_{\text {}}}}\) of their salt ( \({\mathrm{A \mathrm{~B}}}\) ) solution is ____ .

1 7
2 3.5
3 6.9
4 10
CHXI07:EQUILIBRIUM

314724 Assertion :
Solution of salts formed from strong bases and weak acids are alkaline.
Reason :
\(\mathrm{pH}\) of such solution is greater than 7 .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI07:EQUILIBRIUM

314725 The hydrolysis constant of ammonium acetate is given by

1 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{a}}}}}\)
2 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{b}}}}}\)
3 \(\dfrac{{{{\rm{K}}_{\rm{w}}}}}{{{{\rm{K}}_{\rm{a}}}{\rm{.}}{{\rm{K}}_{\rm{b}}}}}\)
4 \({{\rm{K}}_{\rm{a}}}{\rm{.}}{{\rm{K}}_{\rm{b}}}\)
CHXI07:EQUILIBRIUM

314726 Which of the following salts is the basic in aqueous solution?

1 \(\mathrm{CH}_{3} \mathrm{COOK}\)
2 \(\mathrm{FeCl}_{3}\)
3 \(\mathrm{Pb}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}\)
4 \(\mathrm{Al}(\mathrm{CN})_{3}\)
CHXI07:EQUILIBRIUM

314727 A weak acid \(\mathrm{HX}\) has \({{\rm{K}}_{\rm{a}}}{\rm{ = 1}}{\rm{.0 \times 1}}{{\rm{0}}^{{\rm{ - 5}}}}\) and it forms a salt \(\mathrm {NaX}\) when treated with caustic soda. The percentage of hydrolysis of a \({\text{0}}{\text{.1 M NaX}}\) solution is

1 \(0.1 \%\)
2 \(0.01 \%\)
3 \(0.001 \%\)
4 \(1 \%\)