CUET · CHEMISTRY · PYQ PAPER 2023
A first order reaction is found to have a rate constant \(k = 5.5 \times 10^{-14}\ s^{-1}\).
Find the half-life of the reaction.
- A \(t_{1/2} = 0.693\ s\)
- B \(t_{1/2} = 5.5 \times 10^{13}\ s\)
- C \(t_{1/2} = 2.303 \times 10^{13}\ s\)
- D \(t_{1/2} = 1.26 \times 10^{13}\ s\)
Answer & Solution
Correct Answer
(D) \(t_{1/2} = 1.26 \times 10^{13}\ s\)
Step-by-step Solution
Detailed explanation
\(t_{1/2} = \frac{0.693}{k}\) \(t_{1/2} = \frac{0.693}{5.5 \times 10^{-14}\ s^{-1}}\) \(t_{1/2} = 1.26 \times 10^{13}\ s\)
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