Skip to content

Course home

Sign up

5.2 Controlling reactions

EasyMediumHard
123456789101112131415161718192021
Question 3
F

A student plots a graph of the volume of gas made against time. The curve passes through 46 cm346\,\mathrm{cm^{3}}46cm3 at 30 s.

To find the rate of reaction at 30 s, the student draws a tangent to the curve at 30 s. The tangent passes through the points (10 s, 26 cm326\,\mathrm{cm^{3}}26cm3) and (50 s, 66 cm366\,\mathrm{cm^{3}}66cm3).

What is the rate of reaction at 30 s?

[1]
A

1.00 cm3/s1.00\,\mathrm{cm^{3}/s}1.00cm3/s

B

1.32 cm3/s1.32\,\mathrm{cm^{3}/s}1.32cm3/s

C

1.53 cm3/s1.53\,\mathrm{cm^{3}/s}1.53cm3/s

D

2.60 cm3/s2.60\,\mathrm{cm^{3}/s}2.60cm3/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.

Question bank