MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Two complexes A and B have dissociation constants 1.0 x 10-12 and 4.7 x 10-14 respectively. Which complex will be more stable? |
| A. | A |
| B. | B |
| C. | Both are equally stable |
| D. | Cannot be determined |
| Answer» C. Both are equally stable | |
| 2. |
For a particular complex, the dissociation equilibrium constant is given as 2.3 x 10-9. What will be the overall stability constant for this complex? |
| A. | 4.35 x 10-10 |
| B. | 4.35 x 1010 |
| C. | 4.35 x 10-8 |
| D. | 4.35 x 108 |
| Answer» E. | |
| 3. |
If β is the formation constant, then the instability constant = ________ |
| A. | 1 – β |
| B. | β – 1 |
| C. | (1/β) |
| D. | log(β) |
| Answer» D. log(β) | |
| 4. |
If the values of stepwise stability constants for a series of successive reactions are logK1 = 4, logK2 = 3.2, logK3 = 2.7 and logK4 = 2, what is the value of β4? |
| A. | 11.9 |
| B. | 7.94 x 1011 |
| C. | 1.47 x 105 |
| D. | 27.4 |
| Answer» C. 1.47 x 105 | |
| 5. |
How are the stepwise stability constants (K) related to the overall stability constant (β)? |
| A. | βn = K1 + K2 + …. + Kn |
| B. | βn = K1 x K2 x … x Kn |
| C. | βn = logK1 + logK2 + …. + logKn |
| D. | βn = 1/(K1 + K2 + …. + Kn) |
| Answer» C. βn = logK1 + logK2 + …. + logKn | |