Calculate the Concentration of Chromate Ion (CrO₄^2-) in a 0

question 82

Multiple Choice

Calculate the concentration of chromate ion (CrO₄^2-) in a 0.450 M solution of chromic acid (H₂CrO₄) . [For chromic acid, K_a1 = 0.18, K_a2 = 3.2 * 10^-7.]

• A) 3.2 * 10^-7 M
• B) 1.5 * 10^-6 M
• C) 0.081 M
• D) 1.1 * 10^-6 M
• E) 0.21 M

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