A student investigated how the pH of dilute nitric acid changes as potassium hydroxide solution is added from a burette.
Their results are shown in the graph below.
Use the graph to find the pH of the mixture when 20 cm3 of potassium hydroxide solution has been added.
Acids Questions
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.