Answer to Question #314836 in General Chemistry for Zaza

Question

1) What volume of 2.25M H₂SO₄ should be diluted with water to form a 1.25L of 1.50M acid?

2) What is the concentration of the original solution if 450 mL; a certain solution is diluted in 750 mL water to form 2.0L of 1.50M HCl?

Answer 1

1)If 1.5M = 1.25L

2.25M= ?

(2.25/1.5)× 1.25= 1.875L

2)n(HCl) = C(HCl) * V(solution) = 1.50 * 2.0 = 3.0 moles;

C₀(HCl) = n(HCl)/V₀ (solution) = 3/0.45 = 6.67 М.