At $30^{\circ} \mathrm{C}$, the half life for the decomposition of $\mathrm{AB}_{2}$ is $200 \mathrm{~s}$ and is independent of the initial concentration of $\mathrm{AB}_{2}$. The time required for $80 \%$ of the $\mathrm{AB}_{2}$ to decompose is Given: $\log 2=0.30$ $\quad \log 3=0.48$

Question

At $30^{\circ} \mathrm{C}$, the half life for the decomposition of $\mathrm{AB}_{2}$ is $200 \mathrm{~s}$ and is independent of the initial concentration of $\mathrm{AB}_{2}$. The time required for $80 \%$ of the $\mathrm{AB}_{2}$ to decompose is

Given: $\log 2=0.30$ $\quad \log 3=0.48$

200 s

323 s

467 s

532 s

Solution

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