2. Label six clean, dry, 50 mL beakers 1–6. Transfer about 20 mL of the free-chlorine standard
solution (10 mg/L) to a 100 mL beaker. CAUTION: Handle this solution with care. Avoid
breathing its vapors. Use a 10 mL pipet to measure out exactly 1.00 mL of the free-chlorine
standard solution into Beaker 1. Use a 25 mL pipet to add 24.00 mL of distilled water to
Beaker 1. Continue using this procedure to prepare the free-chlorine solutions in Beakers
2–5, using the amounts of the free-chlorine standard solution and distilled water shown here: