Question

A solution of CuSO4 is labelled 0.01 M. How much CuSO4 in grams, must be used to make 1 liter of solution?

A) 1.120 g
B) 1.595 g
C) 1.6 g
D) 15.0 g

Answer 1

1.595 g

Step-by-step explanation:

The molar mass of CuSO4 is 159.5 g. 159.5 X 0.01 = 1.595 g CuSO4.

Answer 2

Correct answer: C) 1.6 g

Molarity is the moles of solute present per liter solution.

The given molarity of the solution is 0.01 M.

Volume of the solution = 1 L

Calculating the moles from molarity and volume:

`Moles of CuSO_(4) = 0.01 (mol)/(L) * 1 L = 0.01 mol CuSO_(4)`

Converting moles to mass of copper sulfate:

`0.01 mol CuSO_(4) * (159.61 g CuSO_(4))/(1 mol CuSO_(4)) = 1.6 g CuSO_(4)`