GCSE Chemistry – Chemical Reactions – 1 – Exam Style Questions with Answers

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GCSE_OCR_CHE_3_REACT_1

1 / 10

2 / 10

Aqueous

Gas

Liquid

Solid

3 / 10

15.0 g

11.0 g

22.0 g

13.8 g

4 / 10

waste products

less waste of reactants

more products made

less waste of products

5 / 10

Stowmarket Synthetics also know that the percentage yield of a process is important. The factory uses 5.2 tonnes of methanol in process 2. A scientist predicts they should make 9.8 tonnes of ethanoic acid.

They actually make 9.5 tonnes of ethanoic acid.

Show that the percentage yield of ethanoic acid is 97%

9.5 / 9.8 × 100

9.8 / 9.5 × 100

9.5 / 9.5 × 100

9.8 / 9.8 × 100

6 / 10

0.02mol

0.05 mol

50 mol

20 mol

7 / 10

8 / 10

1:3:2

2:1:2

3:2:3

2:3:2

9 / 10

10 / 10

11g

12g

4 g

Your score is

The average score is 30%

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