b) iii) Name a suitable indicator which could be used in step 2.

Here are the answers to the remaining parts of question 2:

b) iii) Name a suitable indicator which could be used in step 2.
Phenolphthalein

iv) State the colour change of the indicator in 2(b)(iii) during the experiment.
The indicator changes from pink to colorless.

c) State the role of the white tile in the experiment.
The white tile is placed under the conical flask to make the color change of the indicator more visible and precise.

d) Describe how the volume of diluted hydrochloric acid used in the experiment was determined.
The volume of diluted hydrochloric acid was determined by reading the initial volume from the burette before starting the titration and then reading the final volume after the endpoint was reached. The difference between the final and initial readings gives the volume of acid used.

e) i) Name the type of reaction which occurred during the experiment.
Neutralization reaction

ii) Write a balanced chemical equation for the reaction in 2(e)(i).
Assuming the base used was sodium hydroxide:

$$\text{HCl(aq)} + \text{NaOH(aq)} \rightarrow \text{NaCl(aq)} + \text{H}_2\text{O(l)}$$

f) Give one safety precaution which could be observed during the experiment.
Wear safety goggles to protect eyes from chemical splashes.