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Acids

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Question 184

A student is investigating how the pH of a solution changes when calcium carbonate powder is added to dilute hydrochloric acid.

The student's method is as follows:

  1. Measure 25.0 cm3 of dilute hydrochloric acid into a beaker using a measuring cylinder.
  2. Measure and record the pH of the acid using a pH probe.
  3. Add a 0.5 g spatula measure of calcium carbonate powder to the beaker and stir.
  4. Measure and record the pH of the mixture.
  5. Repeat steps 3 and 4 until there is no further change in pH.

Name a piece of laboratory equipment that could be used to measure the 25.0 cm3 of dilute hydrochloric acid more accurately than a measuring cylinder.

[1]

Acids Questions

  1. GCSE
  2. /Chemistry
  3. /Acids

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.

Question bank