A calorimeter is set up with 100.0 mL of water in it at 22.1˙C. When 5.836 g of a salt MX is added to the water and stirred, the salt dissolves and the temperature of the solution increases to 28.4˙C
A calorimeter is set up with 100.0 mL of water in it at 22.1˙C. When 5.836 g of a salt MX is added to the water and stirred, the salt dissolves and the temperature of the solution increases to 28.4˙C. The mass used is 0.0389 moles of the salt. What is the ∆H of solution of the MX salt?
c (solution) = 4.05 J/g.˙C
MX (s) --> M+ (aq) + X- (aq) ∆H = ?
a. +2.7 kJ
b. -2.7 kJ
c. -69.4 kJ
d. +69.4 kJ
e. -15.8 kJ
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