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6.2 Quantitative analysis

6.2 Quantitative analysis

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Question 23

The equation for the reaction between sodium hydroxide solution and dilute nitric acid is:

NaOH+HNO3→NaNO3+H2O \text{NaOH} + \text{HNO}_3 \rightarrow \text{NaNO}_3 + \text{H}_2\text{O} NaOH+HNO3​→NaNO3​+H2​O

Calculate the percentage atom economy for the production of sodium nitrate (the desired product) in this reaction.

Relative formula masses (MrM_rMr​):

  • NaOH=40.0\text{NaOH} = 40.0NaOH=40.0
  • HNO3=63.0\text{HNO}_3 = 63.0HNO3​=63.0
  • NaNO3=85.0\text{NaNO}_3 = 85.0NaNO3​=85.0
  • H2O=18.0\text{H}_2\text{O} = 18.0H2​O=18.0

Give your answer to one decimal place.

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Markscheme

6.2 Quantitative analysis Questions

  1. GCSE
  2. /Chemistry
  3. /6.2 Quantitative analysis

157 exam-style questions on Edexcel GCSE Chemistry 6.2 Quantitative analysis, covering 6.2.1 Concentration in mol dm⁻³ and titration calculations, 6.2.2 Percentage yield and why actual yield falls short, 6.2.3 Atom economy of a reaction, 6.2.4 Choosing a reaction pathway, and 6.2.5 Molar volume of gases and Avogadro's law. Each one has a worked solution and a mark scheme showing where the marks go.

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