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.
