Reversible reactions - AQA test questions - AQA

1

What is this symbol '⇌' used to represent?

2

What term is used to describe a chemical reaction in which the forward and reverse reaction rates are the same?

3

What is produced in the backward reaction in this equilibrium, when the reaction goes from right to left: NH4Cl(s) ⇌ NH3(g) + HCl(g)?

4

If the forward reaction is endothermic, what can be deduced about the reverse reaction?

5

When a reversible reaction is at equilibrium, which of these statements is true?

6

The equation for the Haber process is: N2 + 3H2 ⇌ 2NH3. What gases will be present at equilibrium?

7

One of the stages in sulfuric acid production is described by this equation: 2SO2(g) + O2(g) ⇌ 2SO3(g). What will happen to the yield of SO3 if the pressure is increased? - Higher

8

If the forward reaction in a reversible reaction is endothermic, what will be the effect of decreasing the temperature? - Higher

9

What is the effect of decreasing the pressure on the following equilibrium 2NO(g) + O2(g) ⇌ 2NO2(g)? - Higher

10

What effect on the equilibrium position is produced by adding a catalyst to a system in equilibrium? - Higher