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General Principles and processes of Isolation of Elements
medium
Consider the following reactions at $1000\,^oC$
$(I)$ $Zn(s) + \frac{1}{2}{O_2}(g)\xrightarrow{\Delta }ZnO(g);{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} $ $\Delta {G^o} = - 360{\mkern 1mu} \,kJ{\mkern 1mu} \,mo{l^{ - 1}}$
$(II)$ $C(s) + \frac{1}{2}{O_2}(g)\xrightarrow{\Delta }CO(g);{\mkern 1mu} {\mkern 1mu} $ $\Delta {G^o} = - \,460{\mkern 1mu} \,kJ\,{\mkern 1mu} mo{l^{ - 1}}$
and choose the correct statement at $1000\,^oC$
A
$ZnO$ is more stable than $CO$
B
$ZnO$ can be reduced to $Zn$ by $C$
C
$ZnO$ and $CO$ are formed at equal rate
D
$ZnO$ can not be reduced to $Zn$ by $C$
Solution
$\Delta {G^o}$ for overall reaction become $-ve.$
Standard 12
Chemistry
