Answer to Question #100074 in Physical Chemistry for alyan haider

Question

how much 10% solution is needed to make 500ml of 2% solution

Answer 1

P₁V₁ = P₂V₂

P₁ being the percent of solution initially (10 %)

P₂ being the percent of solution finally (2 %)

V₁ being the volume initially (V₁₎

V₂ being the volume finally (500 mL)

Putting above values in the equation :

10 * V₁ = 2 * 500

V₁ = 100 mL