Question 1. 1. Which of the following will increase the rate of backward reactio

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Question 1. 1. Which of the following will increase the rate of backward reaction in a reversible reaction? (Points : 1)       Increase in concentration of one of the reactants
      Decrease in concentration of one of the products
      Increase in concentration of one of the products
      None of the above

Question 2. 2. What is the effect of increase in temperature on the rate of a reaction in which heat is given out? (Points : 1)       Rate increases.
      Rate decreases.
      No change occurs.
      Initially rate increases and then decreases.

Question 3. 3. Which of the following would favor a reaction in which heat is absorbed? (Points : 1)       High temperature
      Low temperature
      Increase in pressure
      No change in temperature

Question 4. 4. Reaction between iron and steam is reversible if carried out: (Points : 1)       At constant temperature.
      At constant pressure.
      In an open vessel.
      In a closed vessel.

Question 5. 5. What is the effect of increasing pressure on the following reaction at equilibrium?
2A (g) + B (g)  ? C (g) + 2D (g) (Points : 1)       Forward reaction is favored.
      Backward reaction is favored.
      Equilibrium is not affected.
      Temperature increases.

Question 6. 6. For the reaction CO (g) + H2O (g) ?  CO2 (g) + H2 (g) at equilibrium, the amount of CO2 is increased by: (Points : 1)       Adding a catalyst.
      Decreasing the volume.
      Increasing the pressure.
      Increasing the amount of CO.

Question 7. 7. Which of the following increases the yield of ammonia in the following reaction:
N2 (g) + 3H2 (g)  ? 2NH3(g) (Points : 1)       Low temperature, low pressure
      Low temperature, high pressure
      High temperature, high pressure
      High temperature, low pressure

Question 8. 8. Which of the following favors the formation of SO3 in the following reaction:
2SO2 (g) + O2 (g)  ? 2SO3 (g) (Points : 1)       Removal of SO2
      Increase in pressure
      Removal of oxygen
      Increase in volume
Question 1. 1. Which of the following will increase the rate of backward reaction in a reversible reaction? (Points : 1)       Increase in concentration of one of the reactants
      Decrease in concentration of one of the products
      Increase in concentration of one of the products
      None of the above

Question 2. 2. What is the effect of increase in temperature on the rate of a reaction in which heat is given out? (Points : 1)       Rate increases.
      Rate decreases.
      No change occurs.
      Initially rate increases and then decreases.

Question 3. 3. Which of the following would favor a reaction in which heat is absorbed? (Points : 1)       High temperature
      Low temperature
      Increase in pressure
      No change in temperature

Question 4. 4. Reaction between iron and steam is reversible if carried out: (Points : 1)       At constant temperature.
      At constant pressure.
      In an open vessel.
      In a closed vessel.

Question 5. 5. What is the effect of increasing pressure on the following reaction at equilibrium?
2A (g) + B (g)  ? C (g) + 2D (g) (Points : 1)       Forward reaction is favored.
      Backward reaction is favored.
      Equilibrium is not affected.
      Temperature increases.

Question 6. 6. For the reaction CO (g) + H2O (g) ?  CO2 (g) + H2 (g) at equilibrium, the amount of CO2 is increased by: (Points : 1)       Adding a catalyst.
      Decreasing the volume.
      Increasing the pressure.
      Increasing the amount of CO.

Question 7. 7. Which of the following increases the yield of ammonia in the following reaction:
N2 (g) + 3H2 (g)  ? 2NH3(g) (Points : 1)       Low temperature, low pressure
      Low temperature, high pressure
      High temperature, high pressure
      High temperature, low pressure

Question 8. 8. Which of the following favors the formation of SO3 in the following reaction:
2SO2 (g) + O2 (g)  ? 2SO3 (g) (Points : 1)       Removal of SO2
      Increase in pressure
      Removal of oxygen
      Increase in volume

Explanation / Answer

1.Increase in concentration of one of the products

2.Rate decreases.

3.High temperature

4.In a closed vessel.

5.Equilibrium is not affected(products have same no. of moles as reactants)

6.Increasing the amount of CO.

7.Low temperature, high pressure(high pressure,as no. of moles decreases in FW reaction)

8.Increase in pressure(product has less no. of moles)

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