Which of the following reactions performs zer | vedclass

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(A) Work done in a chemical reaction at constant pressure is given by $W = -P \Delta V = -\Delta n_g RT$,where $\Delta n_g$ is the change in the numbe

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$CH_{4(g)} + Cl_{2(g)} \rightarrow CH_3Cl_{(g)} + HCl_{(g)}$

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(A) Work done in a chemical reaction at constant pressure is given by $W = -P \Delta V = -\Delta n_g RT$,where $\Delta n_g$ is the change in the number of moles of gaseous products and reactants.For zero work,$\Delta n_g$ must be equal to $0$.In option $A$: $\Delta n_g = (1 + 1) - (1 + 1) = 0$.In option $B$: $\Delta n_g = 2 - (3 + 1) = -2$.In option $C$: $\Delta n_g = 2 - (1 + 2.5) = -1.5$.In option $D$: $\Delta n_g = 4 - (2 + 7) = -5$.Since $\Delta n_g = 0$ for reaction $A$,it performs zero work.

Which of the following reactions performs zero work?

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