Answer to Question #301936 in General Chemistry for tra lala

Question

100.0 mL of a 0.500 M solution of KBr is diluted to 500.0 mL. What is the new concentration of the solution?

Answer 1

C_M = n / V

n = C_M x V

n₁ = n₂

C_M1 x V₁ = C_M2 x V₂

0.500 x 0.1000 = C_M2 x 0.5000

C_M2 = (0.500 x 0.1000) / 0.5000 = 0.1 M