When 25.0 grams of solid potassium hydroxide (KOH, molar mass = 56.1 g/mol) is dissolved in 100.0 grams of water, the solution i

Question

3 years ago

13

When 25.0 grams of solid potassium hydroxide (KOH, molar mass = 56.1 g/mol) is dissolved in 100.0 grams of water, the solution i

ncreases in temperature by 61.5ºC. What is the molar heat of solution (ΔH) for potassium hydroxide in kJ/mol?
Remember that the mass of the solid is not added to the mass of the liquid to determine the mass of the solution. Just use the mass of the water.

q=CpmΔT and Cp for H2O = 4.18 J/gºC

Select one:
a. +57.7 kJ/mol
b. -1.03 kJ/g
c. -57.7 kJ/mol
d. 57700 J/mol

Chemistry