Describe how you would prepare 5.00 liters of a 6.00 solution of potassium hydroxide

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10-04-2018
Chemistry

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Describe how you would prepare 5.00 liters of a 6.00 solution of potassium hydroxide

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transitionstate transitionstate · Answer 1 · 2018-04-19T19:32:38+02:00

This solution is made in two steps,

Step 1: Calculations:

Calculate the amount of KOH in grams required to prepare 5 L solution of 6 Molarity.
As, Molarity = Mass / M.mass × 1 / V
Solving for Mass,
Mass = Molarity × M.mass × Volume

Mass = 6 mol L⁻¹ × 56.1 g mol⁻¹ × 5 L

Mass = 1683 g of KOH

Step 2: Prepare the solution:
Take 5 L volumetric flask, wash it, dry it and add 1683 g of KOH in it. Then take distilled water and add it to volumetric flask containing KOH upto the mark of 5 Liter. Now the soulution formed has a volume of 5 Liter and its concentration is 6 M.