\(R \rightarrow P\)
\(-x x=\frac{2}{3} a \)
\(a-\frac{2}{3} a\)
According to the half-life of a first order reaction,
\(t=\frac{2.303}{k} \log \frac{ a }{ a - x }\)
\(=\frac{2.303}{4.3 \times 10^{-4}} \log \frac{ a }{ a / 3}\)
\(=\frac{2.303}{4.3 \times 10^{-4}} \log 3\)
\(=2.5 \times 10^{3} \,sec\)
$C{l_{2(aq)}} + {H_2}{S_{(aq)}} \to {S_{(S)}} + 2H_{(aq)}^ + + 2Cl_{(aq)}^ - $ માટે વેગ $= K[Cl_2][H_2S]$ છે તો કયો તબક્કો વેગ સમીકરણ સાથે સુસંગત છે ?
$(A)$ $Cl_2 + H_2S \rightarrow H^++ Cl^- + Cl^+ + HS^-$ (ધીમો); $ Cl^+ + HS^- \rightarrow H^++ Cl^- + S$ (ઝડપી)
$ (B)$ $H_2S $ $\rightleftharpoons$ $ H^+ + HS^-$ (ઝડપી સંતુલન) ; $Cl_2 + HS^- \rightarrow 2Cl^- + H^+ + S $ (ધીમો)