Question

Calculate the concentration of the solution produced when 5.2g of potassium chloride is

dissolved in 200cm of water.

Answer 1

Answer: The concentration of solution is 0.35 M

Step-by-step explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

`Molarity=(n* 1000)/(V_s)`

where,

n = moles of solute

`V_s` = volume of solution in ml = 200

moles of
`KCl` =
`\frac{\text {given mass}}{\text {Molar mass}}=(5.2g)/(74.5g/mol)=0.070mol`

Now put all the given values in the formula of molality, we get

`Molarity=(0.070* 1000)/(200)`

`Molarity=0.35M`

Therefore, the concentration of solution is 0.35 M