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5.2 Controlling reactions

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Question 4
F

A student measures the volume of gas made in a reaction. The graph shows the results. The student draws a tangent to the curve at 20 s.

image

What is the rate of reaction at 20 s?

[1]
A

0.50 cm3/s0.50\,\mathrm{cm^{3}/s}0.50cm3/s

B

1.0 cm3/s1.0\,\mathrm{cm^{3}/s}1.0cm3/s

C

1.2 cm3/s1.2\,\mathrm{cm^{3}/s}1.2cm3/s

D

1.5 cm3/s1.5\,\mathrm{cm^{3}/s}1.5cm3/s

Markscheme

5.2 Controlling reactions Questions

  1. GCSE
  2. /Chemistry
  3. /5.2 Controlling reactions

56 exam-style questions on OCR GCSE Chemistry 5.2 Controlling reactions, covering 5.2.1 Measuring and interpreting rate of reaction, 5.2.2 Factors affecting rate and collision theory, and 5.2.3 Catalysts, activation energy and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.

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