Is the change GeCl 2 to GeCl 4 reduction, oxidation or neither? Give a reason for your choice.

Oxidation

Explanation:

Oxidation number of Ge on the left = +2

Oxidation number of Ge on the right = +4

So change in oxidation number is +2.

Which is an increase from left to right.

By the way, oxidation is loss of electrons.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.