Among the following reactions, find those that are redox ...

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Question 1

According to the balanced equation shown below, 4.00 moles of oxalic acid, H₂C₂O₄, reacts with ________ moles of permanganate, MnO₄^-.

5 H₂C₂O₄(aq) + 2 MnO₄^-(aq) + 6 H⁺(aq) → 10 CO₂(g) + Mn²⁺(aq) + 8 H₂O(l)

◦ 1.60
◦ 4.00
◦ 8.00
◦ 9.00

Question 2

Among the following reactions, find those that are redox reactions:

1) HOCl(aq) + NaOH(aq) → NaOCl(aq) + H₂O(l)
2) 5 I^-(aq) + IO₃^-(aq) + 6 H⁺(aq) → 3 I₂(s) + 3 H₂O(l)
3) 2NaCl(s) + H₂SO₄(aq) →2 HCl(g) + Na₂SO₄(s)
4) CaO(s) + H₂O(l)→ Ca(OH)₂(aq)
5) 2 H₂O₂(aq) → 2 H₂O(l) + O₂(g)

◦ reactions 1) and 3)
◦ reactions 1) and 5)
◦ reactions 2) and 4)
◦ reactions 2) and 5)
◦ reactions 3) and 4)

[coreycathey]

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