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Atoms and reactions

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Question 25

A student titrates a standard solution of barium hydroxide, Ba(OH)2\text{Ba(OH)}_2Ba(OH)2​, with hydrochloric acid, HCl\text{HCl}HCl.

25.00 cm3 of 0.0520 mol dm-3 Ba(OH)2\text{Ba(OH)}_2Ba(OH)2​ are needed to neutralise 21.40 cm3 of HCl(aq)\text{HCl(aq)}HCl(aq).

What is the concentration, in mol dm−3\text{mol dm}^{-3}mol dm−3, of the hydrochloric acid?

A

0.03040.03040.0304

B

0.06070.06070.0607

C

0.1210.1210.121

D

0.2430.2430.243

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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