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pH experiments and finding Ka from data: Edexcel International A Level Chemistry questions

Edexcel International A Level Chemistry past-paper questions on 14.1.5 pH experiments and finding Ka from data, 2019–2025, with mark schemes and examiner’s reports where available.

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  1. Q19(a)(iv)

    June 2024 · Unit 4

    6 marks14.1.5 pH experiments and finding Ka from data14.1.3 Weak acids and Ka
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  2. Q22(c)

    June 2023 · Unit 4

    4 marks14.1.3 Weak acids and Ka14.1.5 pH experiments and finding Ka from data
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    The start of question 22

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All 2 questions on pH experiments and finding Ka from data, as a list
  1. June 2024, Unit 4, Q19(a)(iv) (6 marks): A student measured the pH of separate 0.050 mol dm–3 solutions of CH2ClCOOH and of CHCl2COOH, using a pH meter. The student also calculated the pH of these solu
  2. June 2023, Unit 4, Q22(c) (4 marks): A solution of chloroethanoic acid is prepared for titration with Tris. 0.0150 g of chloroethanoic acid (Mr = 94.5) is dissolved in 1500 cm3 of distilled water.

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