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Indicate whether the following reactions will occur or not. yes or no  Al(s)+Fe2+(aq) → yes or no  Ag(s)+Cr3+(aq)...

Indicate whether the following reactions will occur or not.

yes or no  Al(s)+Fe2+(aq) →
yes or no  Ag(s)+Cr3+(aq) →
yes or no  Co(s)+Cd2+(aq) →
yes or no  Mn(s)+Pb2+(aq) →
yes or no  Cu(s)+Zn2+(aq) →

The most reactive of the metals, which include the alkali metals, react with water to produce hydrogen gas. For example:

2Na(s) + 2H2O → 2Na+ + 2OH− + H2(g)

Which of the following statements about this ReDox reaction are correct?

correct or incorrect  The oxidation number of H decreases.
correct or incorrect  Na is losing electrons.
correct or incorrect  H is being oxidized.
correct or incorrect  Na is a reducing agent.
correct or incorrect  The oxidation number of O increases.

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