Answer in General Chemistry for Mhmd asaad #144559
March 18th, 2023
1. In
is added.
20 ml of a 0.1 mole.L-1 of copper II sulfate solution, some granulated Zinc
a. What is the minimum amount of Zinc that should be used to decolorize the solution?
b. Calculate the concentration of the chemical species that are present in the resulting colorless solution.
The equation for the reaction is;
“Zn+CuSO4to Cu+ZnSO_4”
a) Moles of “Zn” required to decolorize “CuSO_4” “=” Moles of “CuSO_4”
“=0.02Ltimes 0.10 mol/L”
“=0.002mole Zn” “times 0.002Mtimes 65.38g/molZn”
“=0.1308gZn”
b) In finding the concentration, we use;
“M_1V_1=M_2V_2”
“=(20mL)(0.1M)=M_2(1000mL)”
“=” “2mLover 1000M/mL” “=0.002M”
Concentration of the end reactants “= 0.002M”
.
