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

question 74

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