MCQ
Which of the following combination does not evolve $Cl_2$ gas?
- A$HCl(aq.) + KMnO_4$
- B$HCl + MnO_2$
- C$HCl + Br_2$
- ✓$HCl + F_2$

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${N_2}(g)\, + \,{O_2}(g)\,\underset{{{k_2}}}{\overset{{{k_1}}}{\longleftrightarrow}}\,2NO(g)$
$C_0=Ce^{-2.1 \times 10^{-3}t}$ for the forward reaction and $C'_0=C'e^{-4.2 \times 10^{-4}t}$ for the backward reaction, hence $K_c$ for the above equilibrium is :-
(Round off to the Nearest Integer) [Given : $R =8.314 \,J mol ^{-1} K ^{-1}$. Assume,
hydrogen is an ideal gas] [Atomic mass off $Fe$ is $55.85\, u$ ]
