${\displaystyle \underset{?}{\overset{?}{}}}{n}_p{G}_f($ products $)-{\displaystyle \underset{?}{\overset{?}{}}}{n}_r{G}_f($ reactants $)$

and $n_r$ represent the stoichiometric coefficients in sed chemical equation for the reactants and products ely.

Part B

When methanol $(C{H}_{3}OH)$ is combusted, such as when in a gasoline blend, the following reaction occurs:

$2C{H}_{3}OH(l)+3O_2(g)2C{O}_2(g)+4H_{2}O(g)$

Based on the standard free energies of formation given in the table below, what is the standard free energy change for this reactiol

$\backslash$table$[[$Substance$,\backslash$table$[[G_f$