Answer to Question #74286 in General Chemistry for Ava

Question

Question 1.
A Solution X is made by taking 10.00 mL of a 1.0 M solution and add enough water to make 100.0 mL total volume. Solution Y is made by taking 5.0 mL of solution X and diluting it again by adding it to
95 mL of water.

a) What is the molarity of Solution X?

b)What is the molarity of solution Y?

Question 2.
Calculate the molarity of the solution created when 50.0 mL of 0.132 M NaOH is mixed with 75.0 mL of 0.120 M NaOH (assuming that volumes are additive).

Question 3.
If a solution has a measured concentration of OH- of 1.20x10-4 M, what is the pH of this solution?

Answer 1

Question 1
A) 0.1 M
B) 0.005 M

Question 2
0.125 M

Question 3
pH = 10.08