If Chromium(III)chloride Is Added to Be 1 × 10^-12 M

question 92

Multiple Choice

If chromium(III) chloride is added to be 1 × 10^-12 M in an aqueous solution that is 0.10 M NH₃,what is Q_sp and will Cr(OH) ₃(s) precipitate? The K_sp of Cr(OH) ₃ is 6.3 × 10^-31 and K_b for NH₃ is 1.8 × 10^-5.

• A)1.0 × 10^-16,yes
• B)2.4 × 10^-23,no
• C)2.2 × 10^-19,no
• D)2.2 × 10^-19,yes
• E)2.4 × 10^-21,yes

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