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A chemist must prepare 700.0 mL of potassium hydroxide solution with a pH of 12.00 at 25 °C. She will do this in three steps: • Fill a 700.0 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. ☐ x10

A chemist must prepare 700.0 mL of potassium hydroxide solution with a pH of 12.00 at 25 °C. She will do this in three steps: • Fill a 700.0 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. ☐ x10

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter16: Acids And Bases
Section: Chapter Questions
Problem 66AP: . Strong buses are bases that completely ionize in water to produce hydroxide ion, OH-. The strong...
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Preparing a strong base solution with a given pH A chemist must prepare 700.0 mL of potassium hydroxide solution with a pH of 12.00 at 25 °C. She will do this in three steps: ⚫ Fill a 700.0 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. g ☐ x10 ☑
Transcribed Image Text:Preparing a strong base solution with a given pH A chemist must prepare 700.0 mL of potassium hydroxide solution with a pH of 12.00 at 25 °C. She will do this in three steps: ⚫ Fill a 700.0 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. g ☐ x10 ☑
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Preparing a strong base solution with a given pH A chemist must prepare 600.0 mL of sodium hydroxide solution with a pH of 13.60 at 25 °C. He will do this in three steps: • Fill a 600.0 mL volumetric flask about halfway with distilled water. • Weigh out a small amount of solid sodium hydroxide and add it to the flask. • Fill the flask to the mark with distilled water. Calculate the mass of sodium hydroxide that the chemist must weigh out in the second step. Round your answer to 2 significant digits. g ☐ x10 ☑ 1/5
Transcribed Image Text:Preparing a strong base solution with a given pH A chemist must prepare 600.0 mL of sodium hydroxide solution with a pH of 13.60 at 25 °C. He will do this in three steps: • Fill a 600.0 mL volumetric flask about halfway with distilled water. • Weigh out a small amount of solid sodium hydroxide and add it to the flask. • Fill the flask to the mark with distilled water. Calculate the mass of sodium hydroxide that the chemist must weigh out in the second step. Round your answer to 2 significant digits. g ☐ x10 ☑ 1/5
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Preparing a strong base solution with a given pH A chemist must prepare 700.0 mL of potassium hydroxide solution with a pH of 12.00 at 25 °C. She will do this in three steps: • • Fill a 700.0 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. ☐ g ☐ x10 ☑ 5
Transcribed Image Text:Preparing a strong base solution with a given pH A chemist must prepare 700.0 mL of potassium hydroxide solution with a pH of 12.00 at 25 °C. She will do this in three steps: • • Fill a 700.0 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. ☐ g ☐ x10 ☑ 5
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