For the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), if the pressure is increased, what w

Practice Questions

Q1
For the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), if the pressure is increased, what will be the effect on the equilibrium position?
  1. Shift to the left
  2. Shift to the right
  3. No effect
  4. Depends on temperature

Questions & Step-by-Step Solutions

For the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), if the pressure is increased, what will be the effect on the equilibrium position?
  • Step 1: Identify the reaction: CO(g) + 2H2(g) ⇌ CH3OH(g).
  • Step 2: Count the number of gas moles on each side of the reaction.
  • Step 3: On the left side (reactants), there are 1 mole of CO and 2 moles of H2, totaling 3 moles of gas.
  • Step 4: On the right side (products), there is 1 mole of CH3OH.
  • Step 5: Compare the total moles of gas: 3 moles on the left vs. 1 mole on the right.
  • Step 6: Understand that increasing pressure in a reaction favors the side with fewer moles of gas.
  • Step 7: Conclude that increasing pressure will shift the equilibrium position to the right side (towards CH3OH).
  • Le Chatelier's Principle – When the pressure of a system at equilibrium is increased, the equilibrium shifts towards the side with fewer moles of gas.
  • Stoichiometry of Gases – Understanding the relationship between the number of moles of reactants and products in a gas-phase reaction.
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