# How do you find delta h of a chemical equation?

It is not straightforward to measure the enthalpy of a chemical reaction. In the undergraduate laboratory, sometimes we measure the temperature change of a given quantity of water, which the given reaction heats, and this is used to estimate the heat evolved by the given reaction, i.e. they use the $\text{heat capacity of water}$; this is reasonably high.
i.e. ${C}_{\text{heat capacity of water}} = 4.186 \cdot J \cdot {K}^{-} 1 \cdot {g}^{-} 1$.