Which of the following changes will not affect the position of equilibrium in the reaction N2(g) + 3H2(g) ⇌ 2NH3(g)? (2021)
Practice Questions
1 question
Q1
Which of the following changes will not affect the position of equilibrium in the reaction N2(g) + 3H2(g) ⇌ 2NH3(g)? (2021)
Increasing the temperature
Increasing the pressure
Adding a catalyst
Removing NH3
A catalyst speeds up the rate of both the forward and reverse reactions equally, thus it does not affect the position of equilibrium. Other changes like temperature, pressure, and concentration of reactants/products do affect the equilibrium.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following changes will not affect the position of equilibrium in the reaction N2(g) + 3H2(g) ⇌ 2NH3(g)? (2021)
Solution: A catalyst speeds up the rate of both the forward and reverse reactions equally, thus it does not affect the position of equilibrium. Other changes like temperature, pressure, and concentration of reactants/products do affect the equilibrium.
Steps: 6
Step 1: Understand what equilibrium means. In a chemical reaction, equilibrium is when the rate of the forward reaction equals the rate of the reverse reaction.
Step 2: Identify the reaction given: N2(g) + 3H2(g) ⇌ 2NH3(g). This means nitrogen and hydrogen gases react to form ammonia.
Step 3: Know that changes in temperature, pressure, or concentration of reactants/products can shift the position of equilibrium.
Step 4: Learn what a catalyst does. A catalyst is a substance that speeds up a reaction without being consumed in the process.
Step 5: Realize that a catalyst affects both the forward and reverse reactions equally, so it does not change the position of equilibrium.
Step 6: Conclude that adding a catalyst is the change that will not affect the position of equilibrium in this reaction.
