A chemist dissolves 522. mg of pure potassium hydroxide in enough water to make up 120. mL of solution. Calculate the pH of the solution. (The temperature of the solution is 25 °C.) Round your answer to 3 significant decimal places. x10 5

A chemist dissolves 773. mg of pure barium hydroxide in enough water to make up 70. mL of solution. Calculate the pH of the solution. (The temperature of the solution is 25 °C.) Round your answer to 2 significant decimal places. x10

A chemist dissolves 618. mg of pure perchloric acid in enough water to make up 200. mL of solution. Calculate the pH of the solution. Round your answer to 3 significant decimal places. 0 x10 X

Determine the pH of a 7.98 × 103 M Ca(OH)2 solution. Your answer should contain 3 decimal places as this corresponds to 3 significant figures when dealing with logs. pH =

A chemist dissolves 326. mg of pure hydrochloric acid in enough water to make up 250. mL of solution. Calculate the pH of the solution. Be sure your answer has the correct number of significant digits.

A chemist dissolves 272. mg of pure potassium hydroxide in enough water to make up 100. mL of solution. Calculate the pH of the solution. (The temperature of the solution is 25 °C.) Be sure your answer has the correct number of significant digits.

A chemist dissolves 407. mg of pure sodium hydroxide in enough water to make up 90. mL of solution. Calculate the pH of the solution. (The temperature of the solution is 25 °C.) Be sure your answer has the correct number of significant digits.

The acid dissociation constant K of hydrocyanic acid (HCN) is 6.2 × 10 10 Calculate the pH of a 3.0M solution of hydrocyanic acid. Round your answer to 1 decimal place. pH = 0

The pH scale was designed to make it convenient to express hydrogen ion concentrations that are small in aqueous solutions. The definiton of pH is in terms of base 10 logarithms. pH - log [H+] where [H+] is the hydrogen ion concentration. a. If the hydrogen ion concentration in a solution is 8.63 × 10-4 mol/L, the pH is == b. If the pH of a solution is 4.357, the hydrogen ion concentration is mol/L.