Question

b. Determine oxidation states and answer the following questions about the reaction 2Li + 2H2O 2LiOH + H2. (1 point)
Oxidation state of Li in reactant:
In product:
Oxidation state of H in reactant:
In product:
Oxidation state of O in reactant:
In product:

What type of reaction is this? Is it also a redox reaction? If so, what was oxidized and what was reduced?

Answer 1

Rules (most often true, except in rare occasions):
Group 1 always +1
Group 2 always +2
Oxygen always -2
Group 7 always -1
Noble gases, elemental or homonuclear (the same element) molecules are zero

The rest you have to figure out by subtracting or adding to achieve whatever charge the compound bears.

Answer 2

thanks!