princessroyal
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How much heat is given off when 32g liquid methanol (CH3OH) at its freezing point changes to solid methanol? (Methanol HF=3.16 kJ/mol)

A)1.58 kJ
B)3.16 kJ
C)0.79 kJ
D) 0.18 kJ

Respuesta :

auburnchick0529

Answer:

3.16 kj

Explanation:

Answer:

The correct answer is option B.

Explanation:

Mass of methanol = 32 g

Molar mass of methanol = 32 g/mol

Moles of methanol = [tex]\frac{32 g}{32 g/mol}=1 mol[/tex]

Heat of fusion of methanol = [tex]\Delta H_f=3.16 kJ/mol[/tex]

Amount energy released when 1 mol of methanol is freezes = 3.16 kJ

The correct answer is option B.

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