The Thermochemical Equation for the Combustion of Methanol Is Given $\ell$

question 66

Multiple Choice

The thermochemical equation for the combustion of methanol is given below. CH₃OH( $\ell$ ) + 3/2 O₂(g) ? CO₂(g) + 2 H ₂O(g)
?_rH° = -638.7 kJ/mol-rxn
What is the enthalpy change for the combustion of 8.59 g of CH₃OH?

• A) -171 kJ
• B) -19.9 kJ
• C) -2.38 × 10³ kJ
• D) -5.49 × 10³ kJ
• E) -1.76 × 10⁶ kJ

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