unit 16 Assignment 2, extended diploma science btec
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Course
Unit 16 - Chemistry for Biology Technicians
Institution
PEARSON (PEARSON)
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...
- 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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