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1.1 Formulae, equations and hazards

1.1 Formulae, equations and hazards

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Question 16

Magnesium oxide reacts with dilute nitric acid to form magnesium nitrate and water.

The equation for the reaction is:

MgO(s)+2HNO3(aq)→Mg(NO3)2(aq)+H2O(l) \text{MgO}(\text{s}) + 2\text{HNO}_3(\text{aq}) \rightarrow \text{Mg(NO}_3)_2(\text{aq}) + \text{H}_2\text{O}(\text{l}) MgO(s)+2HNO3​(aq)→Mg(NO3​)2​(aq)+H2​O(l)

Which of the following correctly identifies the physical state of each substance in the chemical equation?

A

magnesium oxide: solid | nitric acid: aqueous | magnesium nitrate: aqueous | water: liquid

B

magnesium oxide: solid | nitric acid: liquid | magnesium nitrate: solid | water: aqueous

C

magnesium oxide: aqueous | nitric acid: aqueous | magnesium nitrate: solid | water: liquid

D

magnesium oxide: aqueous | nitric acid: liquid | magnesium nitrate: aqueous | water: aqueous

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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