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
The answer would be "air, wood". Gases have the highest Kinetic energy and least Potential energy. Liquids have the 2nd highest Kinetic energy and 2nd least potential energy and solids have the least kinetic energy and highest potential energy.
