Question

Help with calculating enthalpy of the reactions and number 2

CHEM 1211L Lab Manual-Page 117 DATA AND CALCULATIONS (Show all data in an easy to follow format, like a table. Attach copies of your graphs) Dilution Calculations 6-ом 6-0-1 Data Reach mass o-120 (1) Write Reaction A between magnesium and hydrochloric acid: (2) Write Reaction B between solid magnesium oxide and hydrochloric acid (3) Write Reaction C for the formation of liquid water AH3 286 kJ/mol

Answer 1

Using Hess's Law we can calculate the heat of a reaction. The calculation is given below;If the Enthalpy of the reaction is negative that means heat of formation of product is less than heat of formation of reactant.so we can conclude when reactant is converted into product heat released. Hence the reaction is exothermic.

Hent of fara o pro Fort, calau al 0t odad frust, Hat farena value, 40 molt

2.For combustion of Mg heat of reaction Value calculation is given below;

2 r: M11S)+//202- My 015), Ah= 135 kJ/mul 一→