Question

What is the % error if the theoretical value of the enthalpy of a reaction is 92 kJ and the experimental value is 38 kJ? Do not include % sign.

Answer 1

To find the % error of the enthalpy of the reaction we have to use the following formula:

`\%error=(|theoreticalvalue-experimentalvalue|)/(theoreticalvalue)\cdot100`

Replace for the given values and solve:

`\begin{gathered} \%error=(|92kJ-38kJ|)/(92kJ)\cdot100 \\ \%error=(|54kJ|)/(92kJ)\cdot100 \\ \%error=0.59\cdot100 \\ \%error=59 \end{gathered}`

The %error is 59.