Question

Question #1.) An unknown liquid requires 7.72 kJ of energy to change 12.4 grams 10.00 degrees C. Calculate the specific heat of the material.

Question #2.) Use the standard heats of formation from the textbook to calculate delta H for the following reaction:

C6H12O6 + O2 (g) --> CO2 (g) + H2O (g)

Question #3.) Calculate the standard enthalpy of formation of solid Ca(OH)2, given the following data:

Ca(s) + O2(g) + H2(g) --> Ca(OH)2

2Ca(s) + O2(g) --> 2CaO (s)                    H= -848.6 kJ

2 Ca(OH)2 (s) --> 2 CaO (s) + H2O (l)    H = +92.2 kJ

H2 + 1/2 O2 --> H2O (l)                          H = -236 kJ

Answer 1