Phenolphthalein indicator was added to a sample of dilute sodium hydroxide solution in a conical flask.
Dilute sulfuric acid was slowly added from a burette until the end point was reached.
What colour change would be observed in the conical flask at the end point of the titration?
colourless to pink
pink to colourless
yellow to red
blue to green
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.