I’ll quiz you one question at a time, mixing theory and viva from qualitative and quantitative analysis. Reply with your answer, and I’ll assess it before the next question.

Question 1 - Qualitative analysis (theory):
What is the difference between preliminary tests and confirmatory tests in inorganic qualitative salt analysis? Give one example of each.

Question 1 - Quantitative analysis (viva):
Why is phenolphthalein suitable as an indicator for the titration of a strong acid with a strong base? State its colour change and pH range.