Pg 1087 28-29-30-31-32 pg 1112 65-67-68

Concentrations of solutions

Pg 1077 22-26

Pg 1062 1-2 pg 1068 10-11 1069 12-13 1072 14-15

Calorimetry worksheet

Enthalpy worksheet

Heat of combustion of a candle Lab

Pg1189 #66 1191 #78 1192 #83-93

Heat of fusion for ice lab

Heat of Fusion for Ice Lab

Purpose: Determine the mass of 100mL of h2o, find the qhot h2o, qice, find mass of ice melted, and mass of ice, and find H fusion for ice in kj/mol.

Calculations:

100mL•1g/1mL=100g h2o           50mL=50g•1mol/18g=2.7 mol

qhot=100g•0-50•4.8j/gc°             24kj/2.7= H=8.8 kj/mol

qice=-24000

qhot=+24000

Conclusion: 

Mass of 100mL is 100g of h2o, the qhot is 24000 the qice is -24000, the mass of ice melted and ice is 50g, the H fusion for ice is 8.8 kj/mol.

Errors: 

The H fusion was off, we added 3 extra ice cubes so the mass of the ice melted increased, not giving us the exact amount of the H fusion.