Question

What is the molarity of a solution with a volume of 974 mL containing 17 g of CuSO4

?
A. 0.109M CuSO4
B. 9.66M CuSO4
C. 2.79M CuSO4
D. 0.0001M CuSO

Answer 1

There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows:

Molarity = 17 g (1 mol / 159.61 g) / 974 mL (1 L / 1000 mL)

Molarity = 0.109 M

Answer 2

Answer : The correct option is, (A) 0.109 M
`CuSO_4`

Solution : Given,

Mass of
`CuSO_4` = 17 g

volume of solution = 974 ml

Molar mass of
`CuSO_4` = 159.609 g/mole

Molarity : It is defined as the number of moles of solute present in one liter of solution.

Formula used :

`Molarity=(w* 1000)/(M* V_s)`

where,

w = mass of
`CuSO_4` (solute)

M = molar mass of
`CuSO_4`

`V_s` = volume of solution in liter

Now put all the given values in the above formula, we get the molarity of solution.

`Molarity=((17g)* 1000)/((159.609g/mole)* (974ml))=0.109mole/L=0.109M`

Therefore, the molarity of the solution is, 0.109 M