Question:medium
The initial pressure of the system for the reaction
\[
A(g) \rightarrow B(g)+C(g)
\]
was \(P_i\). Total pressure at time \(t\) is \(P_t\). The rate constant \(k\) is:
The initial pressure of the system for the reaction
\[
A(g) \rightarrow B(g)+C(g)
\]
was \(P_i\). Total pressure at time \(t\) is \(P_t\). The rate constant \(k\) is:
Show Hint
Always calculate the partial pressure of the reactant first before substituting into the first-order rate equation.
Updated On: May 16, 2026
- \( \displaystyle k=\frac{2.303}{t}\log\frac{P_i}{2P_i-P_t} \)
- \( \displaystyle k=\frac{2.303}{t}\log\frac{P_i}{P_i-P_t} \)
- \( \displaystyle k=\frac{2.303}{t}\log\frac{P_t}{P_i} \)
- \( \displaystyle k=\frac{2.303}{t}\log\frac{2P_t}{P_i} \)
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The Correct Option is A
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