A student carries out a titration by adding dilute nitric acid from a burette to a conical flask containing potassium hydroxide solution and a few drops of indicator.
Which of the following correctly describes the indicator and the colour change at the end point of this titration?
Phenolphthalein | Colourless to pink
Phenolphthalein | Pink to colourless
Methyl orange | Red to yellow
Methyl orange | Blue to red
Practise Edexcel GCSE Chemistry Acids with exam-style questions for Foundation and Higher tier. 276 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.
