A student carries out a titration by adding sodium hydroxide solution from a burette into a conical flask containing dilute hydrochloric acid and a few drops of methyl orange indicator.
Which of the following shows the colour change that is seen in the conical flask at the end point of this titration?
yellow to red
red to yellow
colourless to pink
pink to colourless
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.