Explain Laplace-Lavoisier law.

Explanation

The quantity of heat that must be supplied to decompose a compound into its elements is equal and opposite to the evolved when the same compound is formed its elements.
`C_((s)) + O_(2(g)) rarr CO_(2(g)) " "Delta H = -393.5 kJ ml^(-1)`.
`CO_(2(g)) rarr C_((s)) + O_(2(g)) " "Delta H = +393.5 kJ ml^(-1)`