A student was asked to prepare 1.0 L of a 2.0 M CuSO4 solution. The student...
A student was asked to prepare 1.0 L of a 2.0 M CuSO4 solution. The student placed 40.0 g of CuSO4 crystals in a volumetric flask and filled it with water to the 1000–mL mark. Was the resulting solution 2.0 M? Explain. 
Homework Answers
Given weight of cuso4 W=40 g
Also volume of water V = 1000 ml
Molecular weight of cuso4 is =M.W= 160 g/ mol
Number of moles of cuso4 is n = W/M.W
=40g/160(g/mol)
= 0.25 mol
Molarity of a solution is = n/V=number of moles per litre
=0.25moles/1 litre
= 0.25 M
Hence molarity is 0.25 M
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