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Atoms and reactions

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Question 7

Phosphoric acid is a tribasic acid. What is the mass of Ba(OH)2\text{Ba(OH)}_2Ba(OH)2​ that completely neutralises 250 cm3 of 0.120 mol dm-3 phosphoric acid?

A

3.43 g3.43\text{ g}3.43 g

B

5.14 g5.14\text{ g}5.14 g

C

7.71 g7.71\text{ g}7.71 g

D

15.42 g15.42\text{ g}15.42 g

Markscheme

Atoms and reactions Questions

  1. A Level
  2. /Chemistry
  3. /Atoms and reactions

199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.

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