An environmental scientist treats a sample of acidic run-off containing dilute nitric acid by gradually adding solid calcium hydroxide, Ca(OH)2\text{Ca(OH)}_2Ca(OH)2. During this treatment, the pH of the run-off is observed to rise.
Explain, in terms of the reacting particles, why the addition of calcium hydroxide causes the pH of the solution to increase.
Practise Edexcel GCSE Chemistry Acids with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.