Question

In which of the following $CO(g) + \frac{1}{2}O_{2}(g) \rightarrow CO_{2}(g);\Delta H = - 283.2kJ$.

• A. $C(\text{graphite}) + O_{2}(g) \rightarrow CO_{2}(g)$ ⇌ $\Delta H$
• B. $\Delta H$ ⇌ $MgO(s) + 2HCl(aq) \rightarrow MgCl_{2}(aq) + H_{2}O(l)$
• C. $- 57.33\mspace{6mu} kJ\mspace{6mu} mol^{- 1}$ ⇌ $- 57.33\mspace{6mu} kJ\mspace{6mu} mol^{- 1}$
• D. $- 57.33\mspace{6mu} kJ\mspace{6mu} mol^{- 1}$ ⇌ $57.33\mspace{6mu} kJ\mspace{6mu} mol^{- 1}$

Answer 1

Answer: (C)

$- 57.33\mspace{6mu} kJ\mspace{6mu} mol^{- 1}$ ⇌ $- 57.33\mspace{6mu} kJ\mspace{6mu} mol^{- 1}$

Answer 2

Here $74.6Jmol^{- 1}K^{- 1}$ so, $\Delta S$.