Describe the preparation of
(a) 2.50 L of 0.0250 M KMnO₄ from the solid reagent.
(b) 4.00 L of 0.250 M HClO₄, starting with an 8.00 M solution of the reagent.
(c) 500 mL of a solution that is 0.0200 M in I^-, starting with MgI₂.
(d) 200 mL of 1.00% (w/v) aqueous CuSO₄ from a 0.365 M CuSO₄ solution.
(e) 1.50 L of 0.300 M NaOH from the concentrated commercial reagent [50% NaOH (w/w), sp gr 1.525].
(f) 1.50 L of a solution that is 15.0 ppm in K⁺, starting with solid K₄Fe(CN)₆.