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6.2 Quantitative analysis

6.2 Quantitative analysis

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Question 54

The first stage of the industrial manufacture of nitric acid (the Ostwald process) involves the catalytic oxidation of ammonia to form nitrogen monoxide and steam:

4NH3(g)+5O2(g)→4NO(g)+6H2O(g) 4\text{NH}_3(\text{g}) + 5\text{O}_2(\text{g}) \rightarrow 4\text{NO}(\text{g}) + 6\text{H}_2\text{O}(\text{g}) 4NH3​(g)+5O2​(g)→4NO(g)+6H2​O(g)

What is the total volume of gaseous products, in dm3\text{dm}^3dm3, formed by the complete reaction of 180 dm3 of ammonia gas with excess oxygen? (All gas volumes are measured under the same conditions of temperature and pressure.)

A

180180180

B

270270270

C

450450450

D

360360360

Markscheme

6.2 Quantitative analysis Questions

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

119 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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