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3.3 Yield and atom economy of chemical reactions

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Question 4
H

Titanium is extracted by reacting titanium chloride with sodium.

TiCl4+4Na→Ti+4NaCl\text{TiCl}_4 + 4\text{Na} \rightarrow \text{Ti} + 4\text{NaCl}TiCl4​+4Na→Ti+4NaCl

Relative atomic masses: Na=23\text{Na} = 23Na=23, Cl=35.5\text{Cl} = 35.5Cl=35.5, Ti=48\text{Ti} = 48Ti=48.

a.

Calculate the percentage atom economy for the production of titanium. Give your answer to 3 significant figures.

[4]
b.

The percentage atom economy for this reaction is low. Explain what this means for the company that extracts the titanium.

[2]
Markscheme

3.3 Yield and atom economy of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /3.3 Yield and atom economy of chemical reactions

39 exam-style questions on AQA GCSE Chemistry 3.3 Yield and atom economy of chemical reactions, covering 3.3.1a Percentage yield, 3.3.1b Theoretical mass of a product, 3.3.2a Atom economy, and 3.3.2b Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.

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