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

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.

The answer is d.potassium

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o