Q. No.Some reactions are written below in Column I and their equilibrium constants
in terms of Kc are written in Column II.
Match the following reactions with the corresponding equilibrium constant.
| Column I (Reaction) | Column II (Equilibrium constant) |
| A. | 1. |
| B. | 2. |
| C. | 3. |
| 4. |
Codes
| A | B | C | |
| 1. | 4 | 3 | 2 |
| 2. | 1 | 2 | 3 |
| 3. | 1 | 4 | 3 |
| 4. | 4 | 1 | 3 |
Match the standard free energy of the reaction with the corresponding equilibrium constant.
| A. | 1. K>1 |
| B. | 2. K=1 |
| C. | 3. K=0 |
| 4. K<1 |
Codes
| A | B | C | |
| 1. | 4 | 1 | 2 |
| 2. | 1 | 2 | 3 |
| 3. | 2 | 4 | 3 |
| 4. | 4 | 1 | 3 |
|
A |
B |
|
A. |
i. Variation in product concentration with time. |
|
B. |
ii. Reaction at equilibrium |
|
C. |
iii. Variation in reactant concentration with time. |
Match the graphical variations with their descriptions given above and identify the correct codes below:
| A | B | C | |
| 1. | i | iii | ii |
| 2. | i | ii | iii |
| 3. | iii | ii | i |
| 4. | iii | i | ii |
Match the Column I with Column II
|
Column I |
Column II |
|
A. Equilibrium |
1. |
|
B. Spontaneous reaction |
2. |
|
C. Non-spontaneous reaction |
3. |
Codes
| Options: | A | B | C |
| 1. | 2 | 3 | 1 |
| 2. | 1 | 2 | 3 |
| 3. | 2 | 1 | 3 |
| 4. | 3 | 1 | 2 |
| 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. | \(\Delta G^{\ominus}=-RTlnK\) |
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