6 SECTION BAnswer ALL the questions.(19)(a) The Hess cycle and data to calculate the enthalpy change for the thermaldecomposition of MBCO, are shown.Mg(s) + C(s) + 1%0,(g)MgCO,(s)MgO(s) + CO,(g)CompoundAH /kJ molCo.(g)-394MgO(s)-602MGCO,(s)-1096Calculate the enthalpy change for the thermal decomposition of MGCO,. (b)This question is about hydrated salts.The enthalpy change for the conversion of anhydrous coppertil) sulfate, Cuso., tothe hydrated form, Cuso, SH,0, can be found using Hess's Law.Cuso,(s) + SH,O)AHCuso, SH,Ots)A student carried out experiments to determine the value of the enthalpy change, AH.Known masses of anhydrous and hydrated copper() sulfate were dissolved separatelyin water in insulated containers, and the temperature changes measured.The results are shown in the table.Mass Volume of water used Temperature change/cmCompound/kimotCuso, SH,O1s) 12.545.5-3.0+12.6Cuso,s)8.0050.0+16.0) State why different volumes of water are used in the two experiments.Justify your answer.

The enthalpy of decomposition of compound is defined as the amount of energy released or absorbed…

SECTION B Answer ALL the questions. (19)(a) The Hess cycle and data to calculate the enthalpy change for the thermal decomposition of MBCO, are shown. Mg(s) + CIs) + 1%0,(g) MgCO,(s) Mgo(s) + CO,(g) Compound AH /kJ mol Co.(g) -394 MgO(s) -602 M9CO,(s) -1096 Calculate the enthalpy change for the thermal decomposition of MgCO,.

SECTION B Answer ALL the questions. (19)(a) The Hess cycle and data to calculate the enthalpy change for the thermal decomposition of MBCO, are shown. Mg(s) + CIs) + 1%0,(g) MgCO,(s) Mgo(s) + CO,(g) Compound AH /kJ mol Co.(g) -394 MgO(s) -602 M9CO,(s) -1096 Calculate the enthalpy change for the thermal decomposition of MgCO,.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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