Question Constellation
Subject Chemistry
Biology 77 chainedChemistry 46 chainedPhysics 51 chained

Same answer chain

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reaction is reversible and occurs in a closed or sealed system
Forward and reverse reactions both continue
forward and reverse reactions occur at the same rate

Current question

Q

Ammonia is produced when a mixture of nitrogen and hydrogen reacts. The equation for the reaction is: N2 (g) + 3 H2 (g) ⇌ 2 NH3 (g)

The reaction reaches equilibrium. Explain how an equilibrium is reached.

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Why this earns marks

  1. 1 The reaction is reversible and occurs in a closed or sealed system.
  2. 2 Forward and reverse reactions both continue.
  3. 3 The forward and reverse reactions occur at the same rate.
Common weak answer: Names the topic but skips the middle reasoning links.