For the extraction of Cu2+ by dithizone in CCl4, KL=

For the extraction of Cu2+ by dithizone in CCl4, KL= 1.1 × 104, KM = 7 × 104, Ka = 3 × 10-5, β = 5 × 1022, and n = 2.

(a) Calculate the distribution coefficient for extraction of 0.1 μM Cu2+ into CCl4 by 0.1 mM dithizone at pH 1.0 and at pH 4.0.

(b) If 100 mL of 0.1 μM aqueous Cu2+ are extracted once with 10 mL of 0.1 mM dithizone at pH 1.0, what fraction of Cu2+ remains in the aqueous phase?

Distribution
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