Question

Which one of the following reactions at equilibrium, with all reactants and products in the gaseous phase, would be unaffected by an increase in pressure.

• A. $\mathrm { N } _ { 2 } + 3 \mathrm { H } _ { 2 }$ $2 \mathrm { NH } _ { 3 }$
• B. $2 \mathrm { CO } + \mathrm { O } _ { 2 }$ $2 \mathrm { CO } _ { 2 }$
• C. $2 \mathrm { H } _ { 2 } + \mathrm { O } _ { 2 }$ $2 \mathrm { H } _ { 2 } \mathrm { O }$
• D. $\mathrm { N } _ { 2 } + \mathrm { O } _ { 2 }$

Answer 1

Answer: (D)

$\mathrm { N } _ { 2 } + \mathrm { O } _ { 2 }$

Answer 2

N2 + O2 2NO, the number of molecules of reactants and products are the same so it is not affected by the

pressure.