Question

Chemistry 101 Experiment 7-ENTHAL.PY OF REACTION USING HESS'S LAW Section Name Report Sheet I Determination of the Calorimeter Constant Calorimeter Trial Trial 2 Trial 3 Calculation of Cal T. (cold water) 21.9 219 223 T. (hot water) 60.7 60.3 62.4 The mixture) 48.5 445 45.4 AT.AT 26.6 226 23.1 - 12.2 -18.8 -17 AT C (show units) Mean value for calorimeter constant Calculation of AH Show one complete sample calculation of Cear above. II. Determination of AH, Trial 1 Weight of Mg + vial Weight of vial Weight of Mg Mass of HCl solution T. (initial T of HCI) T: (final T of HCI) ATHCI-Tr-T: 4. (heat released by rxn) Moles of Mg used AH, kJ/mol Mg Mean value of AH Show one complete calculation for AH above.

Answer 1

c = 100x (In-Tm - 100 calle Trial 1 c = - 100 100 x 12.2 26.6 - 54.135 - calloc Bial 2 ( - -100 100 x 15-8 2916 - 30.0885 = cal / Rial 3 = 100 x 17 - 100 293./ -26.407 cel lºc = Mean value of c= -36-877 colle