Calorimetry Lab Report

Calculations Standard Copper Solution
6.242 g CuSO45H2O dissolved and diluted to mark in a 250.00 mL Erlenmeyer flask

(6.242 g Cu〖SO〗_4 5H_2 O)((1 mol Cu〖SO〗_4 5H_2 O)/(249.68 g Cu〖SO〗_4 5H_2 O))((1 mol 〖Cu〗^(2+))/(1 mol Cu〖SO〗_4 5H_2 O))= 0.025 mol 〖Cu〗^(2+) ions
M of 〖Cu〗^(2+)= (0.025 mol 〖Cu〗^(2+))/(0.250 L)=0.10 M 〖Cu〗^(2+) ions

Standardization of EDTA
25 mL aliquot of standard Cu2+ solution reacts with 14.596 mL of EDTA solution

((0.10 mol 〖Cu〗^(2+))/L)((0.02500 L)/1)((1 mol EDTA)/(1 mol 〖Cu〗^(2+) ))= 0.0025 mol EDTA
M of EDTA= (0.0025 mol EDTA)/0.014596L=0.1713 M EDTA

Cu2+ concentration in an unknown Cu(II) solution reported as ppm CuSO45H2O
25.00 mL unknown solution requires 0.1012 mL EDTA solution for a complete