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An unknown salt was dissolved to make a total 1.46g of solution. The temperature of the water
decreased from 24.9C to 21.7C when 5mol were dissolved. What is the heat of solution in J/mol?

Respuesta :

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Answer:

3.832J/mol.

Explanation:

Calculate q (heat absorbed or released during the process):

q = (1.46 g)(4.18 J/g°C)(3.2°C) = 19.020 J

Use q to find ΔHsol (heat of solution):

ΔHsol = q/n = 19.020 J / 5 mol = 3.832J/mol