Question

When metallic aluminum is added to a solution containing iron(II) sulfate a reaction occurs. What species is being oxidized in the overall reaction?

When metallic aluminum is added to a solution containing iron(II) sulfate a reaction occurs. What species is being oxidized in the overall reaction?

SO42−(aq)
Al(s)
Al3+(aq)
Fe2+(aq)
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Part B

A beaker contains nickel(II) sulfate, zinc(II) sulfate and solid iron. What species in this beaker will be reduced?

A beaker contains nickel(II) sulfate, zinc(II) sulfate and solid iron. What species in this beaker will be reduced?

Ni2+(aq)
Fe(s)
Zn2+(aq)
Ni(s)
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Part C

A reaction occurs when solid lead is added to a solution containing copper(II) sulfate. What is the oxidizing agent in the overall reaction?

A reaction occurs when solid lead is added to a solution containing copper(II) sulfate. What is the oxidizing agent in the overall reaction?

Pb2+(aq)
Cu(s)
Pb(s)
Cu2+(aq)
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Part D

Which metal will produce H2 gas when added to a solution containing a strong acid?

Which metal will produce gas when added to a solution containing a strong acid?

Cu(s)
Au(s)
Ag(s)
Zn(s)

Answer 1

Answer:

A) The Al(s)

B) The Ni2+(aq)

C) The Cu2+

D) The Zn(s)

Explanation:

A) The Al(s) is the species that is being oxidized given that it is the one with the highest oxidation potential in the solution.

B) The Ni2+(aq) is the species that is being reduced given that it is the one with the highest reduction potential in the beaker.

C) The oxidizing agent is the substance that is being reduced or you can say the one that has the potential to oxidite other substance. In this case the agent is Cu2+ given that it reduces itself while oxidates the lead.

D) The metal added needs to have a reduction potential lower than the H+ in order to form the gas. The only listed that meets the requirement is the Zn(s).