Q. No.Match the following reactions with the corresponding equilibrium constant:
| Column-I (Reaction) | Column-II (Equilibrium constant) | ||
| A. | (i) | ||
| B. | (ii) | ||
| C. | (iii) | ||
| (iv) |
(Given that reference, Kc is the equilibrium constant for the ammonia synthesis.)
Codes:
| A | B | C | |
| 1. | (iv) | (iii) | (ii) |
| 2. | (i) | (ii) | (iii) |
| 3. | (i) | (iv) | (iii) |
| 4. | (iv) | (i) | (iii) |
Match the standard free energy of the reaction with the corresponding equilibrium constant:
| A | \(\Delta \mathrm{G}^{\ominus}>0\) | (a) | K>1 |
| B | \(\Delta \mathrm{G}^{\ominus}<0\) | (b) | K=1 |
| C | \(\Delta \mathrm{G}^{\ominus}=0\) | (c) | K=0 |
| (d) | K<1 |
Codes:
| A | B | C | |
| 1. | (d) | (a) | (b) |
| 2. | (a) | (b) | (c) |
| 3. | (b) | (d) | (c) |
| 4. | (d) | (a) | (c) |
Match Column-I with Column-II and mark the appropriate option:
|
Column-I (Term) |
Column-II (Conditions) |
||
| (A) |
Equilibrium |
(i) | |
| (B) |
Spontaneous reaction |
(ii) | |
| (C) |
Non-spontaneous reaction |
(iii) |
Codes:
| Options: | A | B | C |
| 1. | (ii) | (iii) | (i) |
| 2. | (i) | (ii) | (iii) |
| 3. | (ii) | (i) | (iii) |
| 4. | (iii) | (i) | (ii) |
| Assertion (A): | For any chemical reaction at a particular temperature, the equilibrium constant is fixed and is a characteristic property. |
| Reason (R): | Equilibrium constant is independent of temperature. |
| 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 False. |
| 4. | (A) is False but (R) is True. |
Given below are two statements:
| Assertion (A): | In the dissociation of PCl5 at constant pressure and temperature, the addition of helium at equilibrium increases the dissociation of PCl5. |
| Reason (R): | Helium reacts with Cl2 . |
| 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 False. |
| 4. | (A) is False but (R) is True. |
For the reaction , the standard free energy is . The equilibrium constant () would be :
| 1. | \(K_{c}\)=0 | 2. | \(K_{c}\)>1 |
| 3. | \(K_{c}\)=1 | 4. | \(K_{c}\)<1 |
PCl5, PCl3, and Cl2 are at equilibrium at 500 K in a closed container and their concentrations are 0.8×10–3 mol L–1 , 1.2×10–3 mol L–1 and 1.2×10–3 mol L–1, respectively.
The value of Kc for the reaction PCl5(g) ⇌ PCl3(g) + Cl2(g) will be:
1. 1.8 × 103 mol L–1
2. 1.8 × 103
3. 1.8 × 10–3 mol L–1
4. 0.55 × 104
Which of the following alternatives best describes the reaction A ⇌ B at its halfway point?
1. \(\Delta G^{\ominus}=0\)
2. \(\Delta G^{\ominus}>0\)
3. \(\Delta G^{\ominus}<0\)
4. \(\Delta G^{\ominus}=-RTlnK\)
At 500 K, equilibrium constant, Kc, for the following reaction is 5.
What would be the equilibrium constant Kc for the reaction?
1. 0.04
2. 0.4
3. 25
4. 2.5
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