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$$S_2O_3^{2-} \longrightarrow SO_3^{2-}+ S$$

The preceding reaction was carried out in the presence of an acid-base catalyst. The reaction is found to be first order with respect to $S_2O_3$ $^{2-}$.

Which of the following statements in NOT true about the reaction?


The rate law is $\text{rate} =k[S_2O_3$ $^{2-}]$.


$H^+$ was most likely used as a homogeneous catalyst for the reaction.


The unit for the rate constant, $k$, is $M^{-1}s^{-1}$.


The half-life of this reaction is independent of the initial concentration of $S_2O_3$ $^{2-}$.

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