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Atoms and reactions

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Question 20

A student titrates a standard solution of sodium carbonate, Na2CO3\text{Na}_2\text{CO}_3Na2​CO3​, with nitric acid, HNO3\text{HNO}_3HNO3​.

25.00 cm3 of 0.0480 mol dm-3 Na2CO3\text{Na}_2\text{CO}_3Na2​CO3​ are needed to neutralise 18.75 cm3 of HNO3(aq)\text{HNO}_3\text{(aq)}HNO3​(aq).

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

A

0.03200.03200.0320

B

0.06400.06400.0640

C

0.07200.07200.0720

D

0.1280.1280.128

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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