Observe the following reactions at $\mathrm{T}(\mathrm{K})$.
I. $\mathrm{A} \rightarrow$ products.
I

Question

Observe the following reactions at $\mathrm{T}(\mathrm{K})$.
I. $\mathrm{A} ightarrow$ products.
II. $5 \mathrm{Br}^{-}(\mathrm{aq})+\mathrm{BrO}_3{ }^{-}(\mathrm{aq})+6 \mathrm{H}^{+}(\mathrm{aq}) ightarrow 3 \mathrm{Br}_2(\mathrm{aq})+3 \mathrm{H}_2 \mathrm{O}(\mathrm{l})$
Both the reactions are started at 10.00 am . The rates of these reactions at 10.10 am are same. The value of $-\frac{\Delta\left[\mathrm{Br}^{-}ight]}{\Delta \mathrm{t}}$ at 10.10 am is $2 	imes 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~min}^{-1}$. The concentration of A at 10.10 am is $10^{-2} \mathrm{~mol} \mathrm{~L}^{-1}$. What is the first order rate constant (in $\mathrm{min}^{-1}$ ) of reaction $I$ ?

Professor PC Thomas Classes · Answer

See detailed solution for explanation.