Question

BG35.2 Enthalpy of Formation of Mgo Page 9 of 12 PRELAB QUESTIONS 1. Read the writeup through the Data Analysis section. A student carried out the experiment described there. The student used 0.4894 g of Mg in the first reaction and found that the temperature of the solution went from 22.1 to 42.7'C. In the second reaction, 0.803 g of MgO was used and the solution went from 22.7 to 28.7°C. Calculate the following (show the calculations beside and/or below the answer): AH The enthalpy of the reaction of magnesium with acid. Mass of final solutiom_ moles Mg- AH1 97 Page 10 of 12 BG35.2 Enthalpy of Formation of MgO ck ( ΔΗ4 The enthalpy of the reaction of magnesium oxide with a cid. Mas of fial slutio ri moles MgO ΔΗ,- 98 BG35.2 Enthalpy of Formation of Mgo Page 11 of 12 AH of Mgo AHr %Error In the reaction between Mg and HCl, what is the limiting reactant? 2. In the reaction between MgO and HCl, what is the limiting reactant? 3.

Answer 1

I note ia24 204 -(273+28.7-22240K 40