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1.1 Formulae, equations and hazards

1.1 Formulae, equations and hazards

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Question 89

Potassium reacts vigorously with water to form potassium hydroxide in solution and hydrogen gas.

Complete the balancing of the equation for this reaction and add the state symbols for each substance.

……K(…… )+2H2O(…… )→……KOH(…… )+H2(…… ) \dots\dots\text{K}(\dots\dots) + 2\text{H}_2\text{O}(\dots\dots) \rightarrow \dots\dots\text{KOH}(\dots\dots) + \text{H}_2(\dots\dots) ……K(……)+2H2​O(……)→……KOH(……)+H2​(……)

Note: The student should provide the missing coefficients and state symbols in their answer.

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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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