Question

Calculate the molarity of a kcl solution made by dissolving 21.2 g of kcl in a total volume of 500. ml. calculate the molarity of a kcl solution made by dissolving 21.2 g of kcl in a total volume of 500. ml. 0.142 0.284 7.03 0.569 none of the above

Answer 1

Molarity of solution =
`\frac{\text{weight of solute i.e. KCl (g)}}{\text{Gram Molecular Weight X Volume of solution(L)}}`

Gram molecular weight of KCl = 74.55 g
Volume of solution = 500 ml = 0.5 l

∴ Molarity =
`(21.2)/(74.55 X 0.5)` = 0.569 M