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Acids

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Question 131

A student determines the concentration of a sample of nitric acid by titrating it against a standard solution of potassium hydroxide.

25.0 cm3 of the nitric acid is measured into a conical flask, and a few drops of phenolphthalein indicator are added.

Potassium hydroxide solution is slowly run into the flask from a burette until the reaction reaches its end point.

Describe the colour change observed in the conical flask at the end point of this titration.

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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