What is the final, balanced equation that is formed by combining these two half reactions? CO
Cu-
> Cu2+
+ 2e-
NO3 + 2e + 2H
>NO2+H20
o Cu2+ + NO3 + + 4e + 2H+ -> Cu + NO3 + H20
o Cu + NO3 + 2H*
>Cu2+ + NO3 + H20
o 2Cu + NO3 + 2H+ —>2Cu?* + NO3 + H20
O Cu+ NO3 + 2H+—
+ NO2 + 2H20

Balanced equation that is formed by combining these two half reactions is .

Explanation:

A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.

For example,

On cancelling the common species from both these half-reactions, the complete balanced equation will be as follows.

Thus, we can conclude that balanced equation that is formed by combining these two half reactions is .

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.