List of top Chemistry Questions on Chemical Kinetics asked in KCET

Given below are the half-cell reactions:
Mn\(^{2+}\) + 2e\(^-\) \(\rightarrow\) Mn (E\(^\circ\) = -1.18 V)
Mn\(^{3+}\) + e\(^-\) \(\rightarrow\) Mn\(^{2+}\) (E\(^\circ\) = +1.51 V)
The E\(^\circ\)\(_{cell}\) for 3 Mn\(^{2+}\) \(\rightarrow\) Mn + 2Mn\(^{3+}\) will be \rule{2cm{0.1mm}}

For a reaction having three steps, the overall rate constant is \( K = \frac{k_1 k_3}{k_2} \). The values of \( E_{a1} \), \( E_{a2} \), and \( E_{a3} \) (activation energies stepwise) are 40, 50, and 60 kJ mol\(^{-1}\) respectively. 
Then the overall \( E_a \) (activation energy) of the reaction is 
\(\underline{\hspace{3cm}}\).

Which one of the following graph is not applicable for a 1st order reaction (R \(\rightarrow\) P)?
The conductivity of centimolar solution of KCl at 298 K is 0.021 Ohm\(^{-1}\) cm\(^{-1}\) and the resistance of the cell containing the solution at 298 K is 60 \(\Omega\). The value of cell constant (G*) is