Page 410 - SUBSEC October 2017_Neat
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3. Four bottles labelled A, B, C and D are found in the laboratory. One bottle contains a strong
monobasic acid, 1 mol dm ; another contains a weak monobasic acid, also of concentration
–3
1 mol dm ; the third bottle contains a reducing agent of E = –1.39V, and the fourth contains
–3
ɵ
another reducing agent of E = –0.14V. All are colourless liquids.
ɵ
You have access to all laboratory equipment, and reagents including H O .
2 2
(i) Hypothesis:
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[1 mark]
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(ii) Apparatus and materials:
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[2 marks]
(iii) Method:
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[3 marks]
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