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Introducing chemical reactions

Introducing chemical reactions

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Question 33

When aqueous barium chloride and aqueous sodium sulfate are mixed, a dense white precipitate of barium sulfate is formed.

What is the correct ionic equation, including state symbols, for this reaction?

A

Ba2+(aq)+SO42−(aq)→BaSO4(aq)\text{Ba}^{2+}(\text{aq}) + \text{SO}_4^{2-}(\text{aq}) \rightarrow \text{BaSO}_4(\text{aq})Ba2+(aq)+SO42−​(aq)→BaSO4​(aq)

B

Ba2+(aq)+SO42−(aq)→BaSO4(s)\text{Ba}^{2+}(\text{aq}) + \text{SO}_4^{2-}(\text{aq}) \rightarrow \text{BaSO}_4(\text{s})Ba2+(aq)+SO42−​(aq)→BaSO4​(s)

C

Ba+(aq)+SO4−(aq)→BaSO4(s)\text{Ba}^{+}(\text{aq}) + \text{SO}_4^{-}(\text{aq}) \rightarrow \text{BaSO}_4(\text{s})Ba+(aq)+SO4−​(aq)→BaSO4​(s)

D

Ba2+(s)+SO42−(s)→BaSO4(s)\text{Ba}^{2+}(\text{s}) + \text{SO}_4^{2-}(\text{s}) \rightarrow \text{BaSO}_4(\text{s})Ba2+(s)+SO42−​(s)→BaSO4​(s)

Markscheme

Introducing chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /Introducing chemical reactions

55 exam-style questions on OCR GCSE Chemistry Introducing chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.

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