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

question 26

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

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