In which of the following gaseous phase reversible reactions, the product yield cannot be increased by the application of high pressure ?
Correct answer: A. N2 + O2 ⇌ 2NO
- A. N2 + O2 ⇌ 2NO
- B. PCl3 + Cl2 ⇌ PCl5
- C. N + 3H2 ⇌ 2NH3
- D. 2SO2 + O2 ⇌ 2SO3
Explanation
For N₂ + O₂ ⇌ 2NO, the total number of gas moles is unchanged, so pressure does not shift the equilibrium yield. The other listed reactions have unequal gas-mole totals, although option c is also incorrectly written as N rather than N₂.
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