CUET · CHEMISTRY · PYQ PAPER 2023
For a reaction \(A \rightarrow C + D\), the initial concentration of \(A\) is \(0.010\ M\).
After \(100\ s\), the concentration of \(A\) is \(0.001\ M\).
The rate constant has numerical value 9.0.
The order of reaction is:
- A Zero order
- B First order
- C Second order
- D Third order
Answer & Solution
Correct Answer
(C) Second order
Step-by-step Solution
Detailed explanation
\(\frac{1}{[A]_t} - \frac{1}{[A]_0} = kt\) \(\frac{1}{0.001} - \frac{1}{0.010} = k \times 100\) \(1000 - 100 = 100k\) \(900 = 100k\) \(k = 9.0\) Matches given numerical value. Second order
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