Question

For the following reaction, identify the element that was oxidized, the element that was reduced, and the reducing agent. Give an explanation for each answer.

SnCl2 + PbCl4 SnCl4 + PbCl2

Answer 1

Try writing the oxidation states of all the reactacts and products in the equation.
The reducing agent will get oxidized itself.

So for that equation:
Sn+2 changes to Sn +4
Pb +4 changes to Pb +2

Hope you can figure out the rest by yourself :-)