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1.1 Formulae, equations and hazards

1.1 Formulae, equations and hazards

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Question 13
H

Which is the balanced ionic equation for forming barium sulfate precipitate?

[1]
A

Ba2++2SO4−→Ba(SO4)2\mathrm{Ba^{2+}} + 2\mathrm{SO_{4}^{-}} \rightarrow \mathrm{Ba(SO_{4})_{2}}Ba2++2SO4−​→Ba(SO4​)2​

B

Ba++SO4−→BaSO4\mathrm{Ba^{+}} + \mathrm{SO_{4}^{-}} \rightarrow \mathrm{BaSO_{4}}Ba++SO4−​→BaSO4​

C

2Ba++SO42−→Ba2SO42\mathrm{Ba^{+}} + \mathrm{SO_{4}^{2-}} \rightarrow \mathrm{Ba_{2}SO_{4}}2Ba++SO42−​→Ba2​SO4​

D

Ba2++SO42−→BaSO4\mathrm{Ba^{2+}} + \mathrm{SO_{4}^{2-}} \rightarrow \mathrm{BaSO_{4}}Ba2++SO42−​→BaSO4​

Markscheme

1.1 Formulae, equations and hazards Questions

  1. GCSE
  2. /Chemistry
  3. /1.1 Formulae, equations and hazards

230 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.

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