Chemistry - Chemical Kinetics Question with Solution | TestHub

The formation of Dextrorotatory isomer A from its Levorotatory isomer B in water is reversible reaction having 1st order kinetics in both direction. Racemic mixture is the equilibrium product if reaction starts from either A or B. Analysis of polarimeter experiment showed that $10\%$ of B was converted into A in 230.3 sec at $25^{\circ }\mathrm{C}$. ( $\log 5=0.7,\log 3=0.48$ and $\log 2=0.3$ ).

Based on given information select number of correct statement(s) among the following.

(i) Rate constant of forward reaction at 25⁰C is $5\times 10^{-4}{s}^{-1}$.

(ii) Rate constant of backward reaction at 25⁰C is $5\times 10^{-4}{s}^{-1}$.

(iii) Activation Energy of forward and backward reaction is equal.

(iv) Equilibrium constant (K) at 25⁰C of B⇌A is 1.

(v) Equilibrium constant increases by increasing temperature.

(vi) Molar Entropy of A and B at 25⁰C must be same.

(vii) Δ_rH of the process is zero.

(viii) Δ_rG⁰ of the process is zero.

(ix) Δ_rG of the process B⇌A is zero initially.