02. Acid, Bases and Salts
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NEET DIGITAL LIBRARY
Ionic Equilibrium

229574 Assertion : $\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ is a stronger acid than $\left[\mathrm{Mg}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$.
**Reason :** Size of $\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ is smaller than $\left[\mathrm{Mg}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ and possesses more effective nuclear charge.

1 If both Assertion and Reason are correct and the Reason is the correct explanation of Assertion.
2 If both assertion and Reason are correct, but Reason is not the correct explanation of assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-(2010
Ionic Equilibrium

229582 Assertion (A) According to Lowry-Bronsted theory, a substance can function as an acid as well as a base.
Reason (R) Acid reacts with a base to produce a salt.
The correct answer is

1 Both (A) and $(R)$ are true and $(R)$ is the correct explanation of $(A)$
2 Both (A) and (R) are true but $(R)$ is not the correct explanation of $(A)$
3 (A) is true but (R) is not true
4 $(A)$ is not true but $(R)$ is true
AP- EAMCET(Medical) -2010
Ionic Equilibrium

229593 Which of the following acids is stronger than benzoic acid $\left(\mathrm{K}_{\mathrm{a}}=6.3 \times 10^{-5}\right)$ ?

1 $\mathrm{A}\left(\mathrm{K}_{\mathrm{a}}=1.67 \times 10^{-8}\right)$
2 $\mathrm{B}\left(\mathrm{pK}_{\mathrm{a}}=6.0\right)$
3 $\mathrm{C}\left(\mathrm{pK}_{\mathrm{d}}=4.0\right)$
4 $\mathrm{D}\left(\mathrm{K}_{\mathrm{a}}=1.0 \times 10^{-5}\right)$
AMU-2012
Ionic Equilibrium

229594 If the salt $M_2 X, Q Y_2$ and $P_3$ have the same solubilities, their $K_{\mathrm{sp}}$ values are related as

1 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)<\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
2 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
3 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)<\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY}_2\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
4 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
AMU-2011
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Ionic Equilibrium

229574 Assertion : $\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ is a stronger acid than $\left[\mathrm{Mg}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$.
**Reason :** Size of $\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ is smaller than $\left[\mathrm{Mg}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ and possesses more effective nuclear charge.

1 If both Assertion and Reason are correct and the Reason is the correct explanation of Assertion.
2 If both assertion and Reason are correct, but Reason is not the correct explanation of assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-(2010
Ionic Equilibrium

229582 Assertion (A) According to Lowry-Bronsted theory, a substance can function as an acid as well as a base.
Reason (R) Acid reacts with a base to produce a salt.
The correct answer is

1 Both (A) and $(R)$ are true and $(R)$ is the correct explanation of $(A)$
2 Both (A) and (R) are true but $(R)$ is not the correct explanation of $(A)$
3 (A) is true but (R) is not true
4 $(A)$ is not true but $(R)$ is true
AP- EAMCET(Medical) -2010
Ionic Equilibrium

229593 Which of the following acids is stronger than benzoic acid $\left(\mathrm{K}_{\mathrm{a}}=6.3 \times 10^{-5}\right)$ ?

1 $\mathrm{A}\left(\mathrm{K}_{\mathrm{a}}=1.67 \times 10^{-8}\right)$
2 $\mathrm{B}\left(\mathrm{pK}_{\mathrm{a}}=6.0\right)$
3 $\mathrm{C}\left(\mathrm{pK}_{\mathrm{d}}=4.0\right)$
4 $\mathrm{D}\left(\mathrm{K}_{\mathrm{a}}=1.0 \times 10^{-5}\right)$
AMU-2012
Ionic Equilibrium

229594 If the salt $M_2 X, Q Y_2$ and $P_3$ have the same solubilities, their $K_{\mathrm{sp}}$ values are related as

1 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)<\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
2 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
3 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)<\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY}_2\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
4 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
AMU-2011
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Ionic Equilibrium

229574 Assertion : $\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ is a stronger acid than $\left[\mathrm{Mg}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$.
**Reason :** Size of $\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ is smaller than $\left[\mathrm{Mg}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ and possesses more effective nuclear charge.

1 If both Assertion and Reason are correct and the Reason is the correct explanation of Assertion.
2 If both assertion and Reason are correct, but Reason is not the correct explanation of assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-(2010
Ionic Equilibrium

229582 Assertion (A) According to Lowry-Bronsted theory, a substance can function as an acid as well as a base.
Reason (R) Acid reacts with a base to produce a salt.
The correct answer is

1 Both (A) and $(R)$ are true and $(R)$ is the correct explanation of $(A)$
2 Both (A) and (R) are true but $(R)$ is not the correct explanation of $(A)$
3 (A) is true but (R) is not true
4 $(A)$ is not true but $(R)$ is true
AP- EAMCET(Medical) -2010
Ionic Equilibrium

229593 Which of the following acids is stronger than benzoic acid $\left(\mathrm{K}_{\mathrm{a}}=6.3 \times 10^{-5}\right)$ ?

1 $\mathrm{A}\left(\mathrm{K}_{\mathrm{a}}=1.67 \times 10^{-8}\right)$
2 $\mathrm{B}\left(\mathrm{pK}_{\mathrm{a}}=6.0\right)$
3 $\mathrm{C}\left(\mathrm{pK}_{\mathrm{d}}=4.0\right)$
4 $\mathrm{D}\left(\mathrm{K}_{\mathrm{a}}=1.0 \times 10^{-5}\right)$
AMU-2012
Ionic Equilibrium

229594 If the salt $M_2 X, Q Y_2$ and $P_3$ have the same solubilities, their $K_{\mathrm{sp}}$ values are related as

1 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)<\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
2 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
3 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)<\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY}_2\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
4 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
AMU-2011
NEET DIGITAL LIBRARY
Ionic Equilibrium

229574 Assertion : $\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ is a stronger acid than $\left[\mathrm{Mg}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$.
**Reason :** Size of $\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ is smaller than $\left[\mathrm{Mg}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ and possesses more effective nuclear charge.

1 If both Assertion and Reason are correct and the Reason is the correct explanation of Assertion.
2 If both assertion and Reason are correct, but Reason is not the correct explanation of assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-(2010
Ionic Equilibrium

229582 Assertion (A) According to Lowry-Bronsted theory, a substance can function as an acid as well as a base.
Reason (R) Acid reacts with a base to produce a salt.
The correct answer is

1 Both (A) and $(R)$ are true and $(R)$ is the correct explanation of $(A)$
2 Both (A) and (R) are true but $(R)$ is not the correct explanation of $(A)$
3 (A) is true but (R) is not true
4 $(A)$ is not true but $(R)$ is true
AP- EAMCET(Medical) -2010
Ionic Equilibrium

229593 Which of the following acids is stronger than benzoic acid $\left(\mathrm{K}_{\mathrm{a}}=6.3 \times 10^{-5}\right)$ ?

1 $\mathrm{A}\left(\mathrm{K}_{\mathrm{a}}=1.67 \times 10^{-8}\right)$
2 $\mathrm{B}\left(\mathrm{pK}_{\mathrm{a}}=6.0\right)$
3 $\mathrm{C}\left(\mathrm{pK}_{\mathrm{d}}=4.0\right)$
4 $\mathrm{D}\left(\mathrm{K}_{\mathrm{a}}=1.0 \times 10^{-5}\right)$
AMU-2012
Ionic Equilibrium

229594 If the salt $M_2 X, Q Y_2$ and $P_3$ have the same solubilities, their $K_{\mathrm{sp}}$ values are related as

1 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)<\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
2 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
3 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)<\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY}_2\right)=\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
4 $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{M}_2 \mathrm{X}\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{QY} \mathrm{Y}_2\right)>\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PZ}_3\right)$
AMU-2011
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