question_answer

The plot shows the variation of \[-In\,\,{{K}_{p}}\] versus temperature for the two reactions. \[M(s)+\frac{1}{2}{{O}_{2}}(g)\to MO(s)\]and \[C(s)+\frac{1}{2}{{O}_{2}}(g)\to CO(s)\] Identify the correct statement:

A) At \[T\,\,<\,\,1200\,\,K,\] oxidation of carbon is unfavourable.

B) Oxidation of carbon is favourable at all temperatures.

C) At \[T\,\,<\,\,1200\,\,K,\] the reaction  \[MO(s)+C(s)\to M(s)+CO(g)\] is spontaneous.

D) At \[12.08\times {{10}^{23}}\]carbon will reduce MO(s) to M(s).

Correct Answer: C

Solution :

[c] At \[T<1200K,\] carbon will reduce MO(s) to M(s) hence, chemical reaction \[MO(s)+C(s)\xrightarrow{{}}M(s)+CO(g)\]is spontaneous.