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Suppose 50 bacteria are placed in a flask containing nutrients, so that they can multiply. A study…
Suppose 50 bacteria are placed in a flask containing nutrients, so that they can multiply. A study at $35^\circ\text{C}$ gave the following results:
Answer the following questions:
| Time (in minutes) | 0 | 15 | 30 | 45 | 60 |
|---|---|---|---|---|---|
| Number of bacteria | 100 | 200 | 400 | 800 | 1600 |
(i)[1.0]
This multiplication of bacteria follows:
- (a)Zero order reaction
- (b)First order reaction
- (c)Second order reaction
- (d)Third order reaction
(ii)[1.0]
The rate constant for the reaction is:
- (a)$0\cdot0462\text{ min}^{-1}$
- (b)$0\cdot462\text{ min}^{-1}$
- (c)$4\cdot62\text{ min}^{-1}$
- (d)$46\cdot2\text{ min}^{-1}$
(iii)[1.0]
The half life period ($t_{1/2}$) of the reaction is:
- (a)1500 minutes
- (b)150 minutes
- (c)15 minutes
- (d)$1\cdot5\text{ minutes}$
Answer
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From ISC 2023 Specimen Chemistry Paper 1, question 18.