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Monitoring chemical reactions

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Question 28

Copper metal, $Cu\text{Cu}$ , can be extracted by heating copper oxide, $CuO\text{CuO}$ , with carbon, $C\text{C}$ .

2\text{CuO} + \text{C} \rightarrow 2\text{Cu} + \text{CO}_2

What is the percentage atom economy for the production of copper?

( $M_r$ : $CuO=80\text{CuO} = 80$ , $C=12\text{C} = 12$ , $Cu=64\text{Cu} = 64$ , $CO2=44\text{CO}_2 = 44$ )

$37%37\%$

$58%58\%$

$74%74\%$

$100%100\%$

Markscheme

Monitoring chemical reactions Questions

GCSE
Chemistry
Monitoring chemical reactions

91 exam-style questions on OCR GCSE Chemistry Monitoring chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.

Monitoring chemical reactions

Question bank

Monitoring chemical reactions

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Question 28

Copper metal, $Cu\text{Cu}$ , can be extracted by heating copper oxide, $CuO\text{CuO}$ , with carbon, $C\text{C}$ .

2\text{CuO} + \text{C} \rightarrow 2\text{Cu} + \text{CO}_2

What is the percentage atom economy for the production of copper?

( $M_r$ : $CuO=80\text{CuO} = 80$ , $C=12\text{C} = 12$ , $Cu=64\text{Cu} = 64$ , $CO2=44\text{CO}_2 = 44$ )

$37%37\%$

$58%58\%$

$74%74\%$

$100%100\%$

Markscheme

Monitoring chemical reactions Questions

GCSE
Chemistry
Monitoring chemical reactions

91 exam-style questions on OCR GCSE Chemistry Monitoring chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.