calculate the molarity of the new solution 5. You prepare a stock solution of cupric sulfate...

Question

Question

calculate the molarity of the new solution

Answer 1

Answer #1

Answer

e. 0.0900 moles/L

Explanation

Formula of cupric sulphate pentahydrate is CuSO4.5H2O

Molar mass of CuSO4.5H2O = 249.71g/mol

number of moles = mass/molar mass

number of moles of CuSO4.5H2O = 3.745g/249.71g/mol = 0.01500mol

molarity = moles of solute per liter of solution

molarity of CuSO4.5H2O = ( 0.01500mol/100ml)×1000ml = 0.1500M

dilution factor = 5ml / 3ml = 1.6667

New molarity = 0.1500M / 1.6667 = 0.0900 moles/L

Answer 2

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