A chemist must prepare 900.0 mL of potassium hydroxide

Last updated: 8/6/2022

A chemist must prepare 900.0 mL of potassium hydroxide solution with a pH of 13.70 at 25 °C. He will do this in three steps: • Fill a 900.0 mL volumetric flask about halfway with distilled water. • Weigh out a small amount of solid potassium hydroxide and add it to the flask. . Fill the flask to the mark with distilled water. Calculate the mass of potassium hydroxide that the chemist must weigh out in the second step. Round your answer to 2 significant digits.