- 1(current)
Q. No.Match the items in Column I and Column II:
| Column I | Column II |
| A. Mathematical expression for the rate of reaction | 1. Rate constant |
| B. Rate of reaction for zero-order reaction is equal to | 2. Rate law |
| C. Units of rate constant for zero-order reaction is same as that of | 3. Order of slowest step |
| D. Order of a complex reaction is determined by | 4. Rate of reaction |
Codes
| A | B | C | D | |
| 1. | 3 | 4 | 1 | 2 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 2 | 1 | 4 | 3 |
| 4. | 4 | 1 | 3 | 2 |
The kinetic data for the reaction: 2A + B2 → 2AB are as given below
| [A]/mol L-1 | [B2]/mol L-1 | Rate/mol L-1s-1 |
| 0.5 | 1.0 | 2.5 × 10-3 |
| 1.0 | 1.0 | 5.0 × 10-3 |
| 0.5 | 2.0 | 1 × 10-2 |
The order of reaction with respect to A and B2 is, respectively:
| 1. | 1 and 2 | 2. | 2 and 1 |
| 3. | 1 and 1 | 4. | 2 and 2 |
| Assertion (A): | Order and molecularity are the same. |
| Reason (R): | Order is determined experimentally, and molecularity is the sum of the stoichiometric coefficient of the rate-determining the elementary step. |
| 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. |
Match the graph given in Column I with the order of reaction given in Column II.
More than one item in Column I may be linked to the same item in Column II:
| Column I | Column II | ||
| (a) |  |
(a) | 1st order |
| (b) |  |
(b) | Zero order |
| (c) |  |
||
| (d) |  |
||
| (i) | (ii) | (iii) | (iv) | |
| 1. | (a) | (b) | (a) | (b) |
| 2. | (a) | (b) | (b) | (a) |
| 3. | (a) | (a) | (b) | (b) |
| 4. | (b) | (b) | (a) | (a) |
Select the correct option based on statements below:
| Assertion (A): | For elementary reactions, the law of mass action and the rate of law expression are generally the same. |
| Reason (R): | The molecularity of an elementary reaction is always one. |
| 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. | Both (A) and (R) are false. |
A reaction A2 + B2 2AB occurs by the following mechanism:
A2 A + A .....(slow)
A + B2 AB + B .....(fast)
A + B AB .....(fast)
Its order would be:
1. 3/2
2. 1
3. 0
4. 2
The following mechanism has been proposed for the reaction of NO with Br2 to form NOBr:
NO(g) + Br2(g) NOBr2(g)
NOBr2(g) + NO(g) 2NOBr(g)
If the second step is the rate determining step, the order of the reaction with respect to NO(g) will be:
1. 1
2. 0
3. 3
4. 2
- 1(current)
Q. No.
© 2024 GoodEd Technologies Pvt. Ltd.