MARKING GUIDE: Unit 3C1– Redox Reactions

1.	D
2.	C
3.	A
4.	B
5.	A
6.	D
7.	C
8.	A
9.	D
10.	A

11.

12.

13.

14.

15.
	a) i)
	2H₂O + O₂ → 2H₂O
	ii)

16.

17.
	a)

	b)


18.
	2(-)
19.
	ii)
	Blue to orange/ red
	iii)


20.

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