MCQ
Internal energy is an example of
- APath function
- ✓State function
- CBoth $ (a) $ and $ (b)$
- DNone of these
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$(i)$ $H_{(aq)}^+ + OH^-= H_2O_{(l)} ,$ $\Delta H = -X_1\,kJ \,mol^{-1}$
$(ii)$ $H_{2(g)} + \frac{1}{2}O_{2(g)} = H_2O_{(l)},$ $\Delta H = -X_2\,kJ \,mol^{-1}$
$(iii)$ $CO_{2(g)} + H_{2(g)} = CO_{(g)} + H_2O_{(l)},$ $\Delta H = -X_3\, kJ\, mol^{-1}$
$(iv)$ $ C_2H_{2(g)}+ \frac{5}{2} O_{2(g)} = 2CO_{2(g)} + H_2O_{(l)},$ $\Delta H = -X_4\,kJ \,mol^{-1}$
Enthalpy of formation of $H_2O_{(l)}$ is
$\left[\right.$ Given $: \mathrm{N}_{\mathrm{A}}=6.02 \times 10^{23}\, \mathrm{~mol}^{-1}$, Atomic mass of $\mathrm{Na}=23.0\, \mathrm{u}]$
${N_2}\left( g \right) + 3{H_2}\left( g \right) \rightleftharpoons \,2N{H_3}\left( g \right)$
On addition of an inert gas at constant pressure & constant temperature which of the following change is $NOT$ observed