Regents Chemistry Exam August 2022
40 How many milliliters of 1 M HCl(aq) must be diluted with water to make exactly 500 mL of 0.1 M HCl(aq)?
(1) 10 mL
(2) 50 mL (3) 100 mL
(4) 5000 mL
Explanation: The formula for dilution is M1V1= M2V2 where M stands for molarity and V for volume. Now, all we have to do is plug our values in.
1M (X) = 0.1M (500ml)
X = 50 ml
Answer: 2