A Solution Contains 3

question 28

Multiple Choice

A solution contains 3.8 × 10^-2 M in Al³⁺ and 0.29 M in NaF.If the K_f for AlF₆^3- is 7 × 10¹⁹,how much aluminum ion remains at equilibrium?

• A) 1.1 × 10^-19 M
• B) 3.1 × 10^-22 M
• C) 9.1 × 10^-19 M
• D) 1.9 × 10^-21 M
• E) 4.4 × 10^-20 M

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