Gen Chem Flashcards
Standard enthalpy of fusion
Solid to liquid
6kJ/mol
Standard enthalpy of solidification
Liquid to solid
-6 kJ/mol
Standard enthalpy of vaporization
Liquid to gas
41 kJ/mol
Standard enthalpy of condensation
Gas to liquid
-41 kJ/mol
Standard enthalpy of sublimation
Solid to gas
51.1 kJ/mol
Standard enthalpy of deposition
Gas to solid
-51.1 kJ/mol
Equation for amount of heat transferred during phase change
q = mL
q is heat
m is mass in grams
L is latent heat
Eq for heat transfer in phase change using standard enthalpy
q = n §H
n is mols
§H is standard enthalpy of phase change
Conduction
Direct transfer of heat with contact and no object movement
Convection
Transfer of heat through motion of liquid or gas over object
Radiation
INDIRECT transfer of heat where objects don’t touch and use electromagnetic waves
Eq for heat transfer
q = mc§T
m is mass of substance
c is specific heat of substance
§T is change in temp
Bomb calorimetry equation
mc§T = mc§T
One side reactants other side calorimeter
Hess’s Law
Total enthalpy change in reaction is same
§H of rxn = §H prod - § H reactants
Molarity
M
Mols solute/Liters soln
