Question

What mass of CuSO4 are needed to prepare 100 mL of a 0.10 M solution? grams

Answer 1

1.596 grams is the mass of CuSO4  needed to prepare 100 ml solution of 0.1 M solution.

Explanation:

Data given:

Volume of the solution = 100 ml or 0.1 litre

molarity of the solution = 0.10 M

mass of CuS$O_{4}$ = ?

atomic mass of CuS$O_{4}$  = 159.6 grams/mole

The mass will calculated by using the following relations:

number of moles = $\frac{mass}{atomic mass of 1 mole}$     equation 1

molarity = $\frac{number of moles}{volume}$                          equation 2

putting the value of number of moles in equation 2

molarity = $\frac{mass}{atomic mass X Volume}$

mass = molarity x atomic mass x volume

mass = 0.1 x 0.1 x 159.6

         = 1.596 grams

1.596 grams will form 100ml solution 0.1 M