yr 12 Chem galvanic and electrolytic cells

In a Galvanic Cell, the anode is...

• positive

• negative

Oxidation occurs at the...

• anode

• cathode

In a Galvanic cell, the electrons flow from the...

• anode to the cathode

• cathode to the anode

E_cell =

• E_red - E_ox

• E_red + E_ox

• E_ox - E_red

• E_ox + E_red

In a redox reaction, the oxidising agent... (choose two options)

• is oxidised

• is reduced

• increases its oxidation number

• decreases its oxidation number

A certain galvanic cell has for its spontaneous cell reaction: Zn + HgO → ZnO + Hg

Which is the half-reaction occurring at the anode?

• HgO + 2 e- → Hg + O^2-

• Zn²⁺ + 2 e- → Zn

• Zn → Zn²⁺ + 2 e-

• ZnO + 2 e- → Zn

Reactions in galvanic cells are

• spontaneous, redox reactions

• non-spontaneous, redox reactions

• spontaneous, non-redox reactions

• non-spontaneous, non-redox reactions

In the wet corrosion of iron, iron is oxidised, while ________ is reduced.

• Oxygen

• Water

• Hydrogen

• Iron (III)

Which of the following is a full, balanced equation for the dry corrosion of magnesium?

• Mg_(s) + O_2(g) --> MgO_2(s)

• Mn_(s) + O_2(g) --> MnO_2(s)

• 2Mg_(s) + O_2(g) --> 2MgO_(s)

• 2Mg_(s) + 2H₂O_(l) + O_2(aq) --> 2Mg(OH)_2(s)

Reduction occurs at the...

• anode

• cathode