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a_sh-v [17]
3 years ago
11

Which 2 diagrams show suitable methods for investigating the speed of the reaction

Chemistry
1 answer:
7nadin3 [17]3 years ago
3 0
I would say D: 2 and 4.

The first line of the question is very important. X reacts with Y to form a gas.

For 2, we let the gas escape and measure the change in mass during the reaction.

For 4, we capture the change in volume of gas during the reaction.

1 does not work: some of the gas escapes through the cotton and the gas captured is not recorded correctly.

3 does not work: the gas is trapped and the mass balance does not record a change in mass.
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