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6.2 Quantitative analysis

6.2 Quantitative analysis

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Question 32

In the industrial Ostwald process for manufacturing nitric acid, ammonia gas is oxidized by oxygen gas according to the following equation:

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 volume of oxygen, in cm3\text{cm}^3cm3, would react completely with 240 cm3 of ammonia gas if both gases are measured at the same temperature and pressure?

A

240×45240 \times \frac{4}{5}240×54​

B

240×54240 \times \frac{5}{4}240×45​

C

240×5240 \times 5240×5

D

240×24240 \times 24240×24

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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