Thermodynamics ...

Which one of the following equations does not correctly represent the first law of thermodynamics for the given processes involving an ideal gas? (Assume non-expansion work is zero)

Oxidising power of chlorine in aqueous solution can be determined by the parameters indicated below $$\displaystyle \frac{1}{2}\mathrm{C}1_{2}(\mathrm{g})$$ to $$\mathrm{C}1^{-}(\mathrm{a}\mathrm{q})$$
(using the data, $$\Delta_{\mathrm{d}\mathrm{i}\mathrm{s}\mathrm{s}}\mathrm{H}_{\mathrm{C}1_{2}}^{\Theta}=240\mathrm{k}\mathrm{J}\mathrm{m}\mathrm{o}1^{-1},\ \Delta_{\mathrm{e}\mathrm{g}}\mathrm{H}_{\mathrm{C}1}^{\Theta}=-349\mathrm{k}\mathrm{J}\mathrm{m}\mathrm{o}1^{-1},\ \Delta_{\mathrm{h}\mathrm{y}\mathrm{d}}\mathrm{H}_{\mathrm{C}1^{-}}=-381\mathrm{k}\mathrm{J}\mathrm{m}\mathrm{o}1^{-1}$$) will be 

Which of the following parameters does not characterize the thermodynamic state of matter?

The combustions of benzene (l) gives $$CO_2(g)$$ and $$H_2O(l)$$. Given that heat of combustion of benzene at constant volume is $$-3263.9 \ kJ\, mol^{-1}$$ at $$25^oC$$, heat of combustion (in $$kJ\,mol^{-1}$$) of benzene at constant pressure will be:
$$(R =8.314JK^{-1}\,mol^{-1})$$

The standard Gibbs energy for the given cell reaction in $$kJ$$ $${mol}^{-1}$$ at $$298K$$ is:$$Zn(s)+{Cu}^{2+}(aq)\rightarrow {Zn}^{2+}(aq)+Cu(s)$$

The INCORRECT match in the following is :

An ideal gas undergoes a cyclic process as shown in Figure.

A process will be spontaneous to all temperatures if:

Compute the heat of formation of liquid methyl alcohol (in kJ mol $$^{ -1 }$$) using the following data. The heat of vaporisation of liquid methyl alcohol is 38  kJ mol$$^{ -1 }$$. 

The $$\Delta_f H^{ \ominus }$$ for $$CO_2(g), CO(g) and H_2O(g)$$ are $$-393.5, -110.5 and  -214.8  kJ  mol^{ -1 }$$, respectively. The standard enthalpy change $$(in kJ  mol^{ -1 })$$ for the reaction $$CO_2(g) + H_2(g)\longrightarrow CO(g) + H_2O(g)$$ is