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6.1 Rate of reaction

6.1 Rate of reaction

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Question 15

A student investigated the rate of the reaction between zinc granules and dilute sulfuric acid.

The equation for the reaction is:

Zn(s)+H2SO4(aq)→ZnSO4(aq)+H2(g) \text{Zn(s)} + \text{H}_2\text{SO}_4\text{(aq)} \rightarrow \text{ZnSO}_4\text{(aq)} + \text{H}_2\text{(g)} Zn(s)+H2​SO4​(aq)→ZnSO4​(aq)+H2​(g)
a.

Which state symbol in this equation does not represent one of the three states of matter?

[1]
b.

What two pieces of measuring apparatus could the student use to find the rate of production of hydrogen gas?

[2]
c.

The table below shows the results of the investigation:

Time in sssVolume of hydrogen gas collected in cm3\text{cm}^3cm3
00
1025
2040
3049
4054
5055
6055

Give three conclusions that can be drawn about the rate of reaction from this data.

[3]
d.

The student repeated the investigation using dilute sulfuric acid at a higher temperature. All other variables were kept the same. Which two of the following statements are correct?

  • More gas was produced in the first 10 seconds.
  • The activation energy for the reaction was higher.
  • The zinc was used up more quickly.
  • The reaction finished at the same time.
  • The total volume of gas collected was greater.
[2]
Markscheme

6.1 Rate of reaction Questions

  1. GCSE
  2. /Chemistry
  3. /6.1 Rate of reaction

26 exam-style questions on AQA GCSE Chemistry 6.1 Rate of reaction, covering 6.1.1 Calculating rates of reactions, 6.1.2 Factors which affect the rates of chemical reactions, 6.1.3 Collision theory and activation energy, and 6.1.4 Catalysts. Each one has a worked solution and a mark scheme showing where the marks go.

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