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Which reaction is not affected by change in pressure?
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The correct answer is:
\(\mathrm{H}_2(\mathrm{~g})+\mathrm{I}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{HI}(\mathrm{g})\)
A reaction in which \(\Delta \mathrm{n}_{\mathrm{g}}\) is zero is not affected by change in pressure, considering various given reactions
(a) \(\Delta \mathrm{n}_{\mathrm{g}}=2-2=0\)
(b) \(\Delta \mathrm{n}_{\mathrm{g}}=2-(3+1)=-2\)
(c) \(\Delta \mathrm{n}_{\mathrm{g}}=2-1=+1\)
[Consider only gaseous substances]
(d) \(\Delta \mathrm{n}_{\mathrm{g}}=2-(2+1)=-1\)
Thus, (a) is the correct option.
(a) \(\Delta \mathrm{n}_{\mathrm{g}}=2-2=0\)
(b) \(\Delta \mathrm{n}_{\mathrm{g}}=2-(3+1)=-2\)
(c) \(\Delta \mathrm{n}_{\mathrm{g}}=2-1=+1\)
[Consider only gaseous substances]
(d) \(\Delta \mathrm{n}_{\mathrm{g}}=2-(2+1)=-1\)
Thus, (a) is the correct option.
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