The Thermochemical Equation for the Combustion of Methanol Is Shown $\to$

Multiple Choice

The thermochemical equation for the combustion of methanol is shown below.

CH₃OH( ) + 3/2 O₂(g) $\to$ CO₂(g) + 2 H ₂O(g)
$\Delta$ _rH ^$\circ$ = -638.7 kJ/mol-rxn
What is the enthalpy change for the combustion of 8.59 g CH₃OH?

A) -171 kJ
B) -19.9 kJ
C) -2.38 $\times$ 10³ kJ
D) -5.49 $\times$ 10³ kJ
E) -1.76 $\times$ 10⁶ kJ