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ZIMSEC A-Level Chemistry

6.1.7.7Buffer solutions

Buffer solutions in ZIMSEC A-Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
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Learning objectives

What the syllabus expects you to be able to do.

  1. 6.1.7.7.1Explain how buffer solutions control pH, including blood and soil pH.
  2. 6.1.7.7.2Calculate the pH and/or pOH of buffer solutions.

Lessons

  • Buffer solutions

    50 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Buffer solutions: sample question

1 mark

In an ethanoic acid–sodium ethanoate buffer, which species removes most of a small amount of added hydrochloric acid?

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