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

question 8

Multiple Choice

If chromium(III) chloride is added to be 1 × 10^-12 M in a solution that is 0.10 M NH₃, what is Qsp and will Cr(OH) ₃ precipitate? The Ksp of Cr(OH) ₃ is 6.3 × 10^-31 and Kb 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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Definitions:

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An American retail company that specializes in clothing and outdoor recreation equipment.

Exponentially Distributed

describes a continuous probability distribution often used to model the time between independent events that happen at a constant average rate.

Standard Deviation

A measure of the dispersion or spread of a set of numbers, indicating how much each number differs from the mean.

Mean

The average of a set of numbers, calculated by dividing the sum of all the values by the number of values.