Given:(A) 2 CO_{(g)} + O_{2(g)} rightarrow | vedclass

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(A) Target equation:$C \ (	ext{graphite}) + \frac{1}{2} O_{2(g)} ightarrow CO_{(g)} \quad \Delta H = ? \dots (i)$From given equations:$(ii) \ C \ (

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$\frac{x-2y}{2}$

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(A) Target equation:$C \ (	ext{graphite}) + \frac{1}{2} O_{2(g)} ightarrow CO_{(g)} \quad \Delta H = ? \dots (i)$From given equations:$(ii) \ C \ (	ext{graphite}) + O_{2(g)} ightarrow CO_{2(g)} \quad \Delta H_2 = -y \ kJ \ mol^{-1}$$(iii) \ CO_{2(g)} ightarrow CO_{(g)} + \frac{1}{2} O_{2(g)} \quad \Delta H_3 = \frac{x}{2} \ kJ \ mol^{-1}$ (Reverse of equation $(A)$ divided by $2$)Adding equations $(ii)$ and $(iii)$:$C \ (	ext{graphite}) + O_{2(g)} + CO_{2(g)} ightarrow CO_{2(g)} + CO_{(g)} + \frac{1}{2} O_{2(g)}$$C \ (	ext{graphite}) + \frac{1}{2} O_{2(g)} ightarrow CO_{(g)}$$\Delta H = \Delta H_2 + \Delta H_3 = -y + \frac{x}{2} = \frac{x-2y}{2} \ kJ \ mol^{-1}$

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