Chemistry · May / June 2020 · Paper 62 · Question 1
0620
As printed in the paper
The question as text
Hot copper(II) oxide reacts with hydrogen. The products are copper and steam. The apparatus used to react copper(II) oxide with hydrogen is shown. hydrogen unreacted hydrogen colourless liquid collected ice U-tube copper(II) oxide
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1(a)[1]
arrow under copper(II) oxide pointing up to the copper(II) oxide
1(b)[1]
start: black
final: brown
1(c)[1]
water
1(d)[2]
to cool
so that the steam / gas condenses / turns into a liquid
1(e)(i)[1]
flammable / explosive
1(e)(ii)[2]
method of collection shown would work
collection apparatus is graduated
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