Same chapter3 marksDifficulty: Medium
For the reaction N2 + 3H2 ⇌ 2NH3, write the expression for Kc and state its units in terms of concentration.
Equilibrium
3 marksDifficulty: Medium
State Le Chatelier's principle and apply it to the Haber process.
Original Khojo Papers practice question — not from a past board paper.
Answer
If a system at equilibrium is disturbed, the equilibrium shifts so as to reduce the effect of the disturbance. In the Haber process, N2 + 3H2 ⇌ 2NH3, the forward reaction is exothermic and reduces the number of gas molecules, so a high pressure and a low temperature favour ammonia; in practice a moderate temperature is used so that the rate is workable.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Removing the ammonia as it forms also drives the equilibrium forward.
Related questions
From the same topic and chapter, at a similar level.
Same chapter3 marksDifficulty: Medium
What is the common ion effect? Give one application of it.
Equilibrium
Same chapter3 marksDifficulty: Medium
Calculate the pH of a 0.01 M solution of hydrochloric acid.
Equilibrium
Same chapter3 marksDifficulty: Medium
What is a buffer solution? Give one example of an acidic and one of a basic buffer.
Equilibrium
Same chapter3 marksDifficulty: Medium
Calculate the pH of a 0.001 M solution of sodium hydroxide.
Equilibrium
Same chapter3 marksDifficulty: Medium
What is solubility product, and how does it predict whether a precipitate will form?
Equilibrium