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unit 16 Assignment 2, extended diploma science btec £7.49
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unit 16 Assignment 2, extended diploma science btec

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This includes: P2, M2, D2 questions task criterion: P2 To carry out experiments to show the effect on the rates of reactions of changes in concentration, particle size, temperature and presence of a catalyst. M2 To explain variation in rates of reaction as a function of concentration, particle siz...

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  • May 16, 2019
  • 12
  • 2018/2019
  • Answers
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Task 1


Concentration and the rate of reaction

Method:

- Weight 10g of marble chips on the top-pan balance
- Une a measuring cylinder to measure out 10 cm3 of 1.00 mol dm-3 hydrochloric acid.
Pour the acid into the conical flask.
(care: 1.00 mol dm-3 hydrochloric acid is an irritant.)
- Set up the following apparatus but do not add the marble chips yet




- Add the marble chips to the conical flask and quickly stopper the flask and connect
the gas syringe. Start the stopclock at the same time.
- Mesure the volume of gas (carbon dioxide) Procedur every 20 seconds.
- Do not stop the clock between readings
- Record your results in a table
- Repeat the experiment using: 20 cm3 0.50mol dm-3 hydrochloric acid, and 40 cm3
0.25 mol dm-3 hydrochloric acid.

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