Reversible reactions and equilibria - Edexcel

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 occurring the same?

3

What is produced in the backward reaction in this equilibrium:

NH4Cl(s) ⇌ NH3(g) + HCl(g)?

4

What is the balanced equation for the reaction which occurs when ammonia is made in the Haber process?

5

What is the main source of the nitrogen used in the manufacture of ammonia?

6

What conditions of temperature and pressure are used in the industrial manufacture of ammonia?

7

One of the stages in sulfuric acid production is described by this equation:

2SO2(g) + O2(g) ⇌ 2SO3(g). - Higher

What will happen to the yield of SO3 if the pressure is increased?

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