Homework SourseI do not understand how to complete 1b and 1c I provided all
I do not understand how to complete 1b and 1c. I provided all the information I have.
TREATMENT OF DATA (50 PTS.) Summarize the results of the following calculations in Table 3 at the end of this section. 1. Using your data from Table 1, determine \'rxn for Mgo(s) + 2 H. (aq) Mg2. (aq) + H2O a. (5) Calculate moles of Mgo l.00 0.3 044 b. (6) Using Eq. 7, calculate the heat gained by the calorimeter and contents. Use Cp 4.184 J/g C for the heat capacity of the solution and Cp 21 J/C for the heat capacity of the calorimeter soln c. (4) using Eq. 9, calculate H\'m in units of kJ/mol. rxnbrxn moles of imiting RcGctant Solution
1b
q rxn = - mass of solution x Cp x (T2-T1) - 21 J/C x (T2-T1)
= - 101 g x 4.184 J/gC x (30.20 - 22.07)C - 21 J/C x (30.20 - 22.07)C
= - 3435.61 - 170.73
= - 3624.34 J
1c
H rxn = q rxn / moles of limiting reactant
= - 3624.34 J / 0.02484 mol
= - 145907.41 J/mol
= - 145.907 kJ/mol
