Exam code: 0653
The electrolysis shown in Fig. 4.1 produces the alkali sodium hydroxide.
Aqueous sodium hydroxide reacts with dilute sulfuric acid.
(i) Complete the word equation for this reaction.
[1]
(ii) The reaction between aqueous sodium hydroxide and dilute sulfuric acid is exothermic.
State what is meant by an exothermic reaction.
[2]
Was this exam question helpful?
Fig. 4.1 shows the reaction pathway diagrams for two reactions.
The activation energy for reaction 1 is represented by the arrow Ea.
(i) Define activation energy.
[1]
(ii) On Fig. 4.1, draw and label an arrow to show the activation energy for reaction 2.
[1]
During reaction 2, the temperature of the reaction mixture changes.
State how the temperature changes.
Give a reason for your answer.
Was this exam question helpful?