In the following reaction, Al and H+ are respectively: 2Al(s) + 6H+(aq) 2Al3+(aq

Question

In the following reaction, Al and H+ are respectively: 2Al(s) + 6H+(aq) 2Al3+(aq) + 3H2(g) Question options: a) Both oxidized b) Oxidized and reduced c) Both reduced d) Reduced and oxidized

In the following redox equation:

Mg(s) + CuSO4(aq) MgSO4(aq) + Cu(s)

Question options:

Two electrons are transferred from the sulfate to the magnesium

One electron is transferred from the magnesium to the copper

Two electrons are transferred from the copper to the magnesium

Two electrons are transferred from the magnesium to the copper

One electron is transferred from the copper to the magnesium

This redox half-reaction will be balanced if:

S4O62- 2S2O32-

Question options:

2 electrons are added to the product side

2 electrons are added to the reactant side

4 electrons are added to the product side

4 electrons are added to the reactant side

a)

Two electrons are transferred from the sulfate to the magnesium

b)

One electron is transferred from the magnesium to the copper

c)

Two electrons are transferred from the copper to the magnesium

d)

Two electrons are transferred from the magnesium to the copper

e)

One electron is transferred from the copper to the magnesium

Explanation / Answer

1. b) Oxidized and reduced

2. d) Two electrons are transferred from the magnesium to the copper

3. c) 4 electrons are added to the product side

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