alleryStart learning →No precipitation occurs when the ion concentrations give a reaction quotient that:
ADoes not exceed Ksp
BGreatly exceeds Ksp
CEquals the value of Kf
DEquals the value of Kd
Answer & Solution
Correct answer: A. Does not exceed Ksp
1. Precipitation is a threshold condition on Qsp.
2. The mixture's ion concentrations yield a reaction quotient, Qsp.
3. That quotient is compared with the solubility product, Ksp.
4. If Qsp does not exceed Ksp, then no precipitation will occur.
5. Precipitation begins only once Qsp passes Ksp.
_Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 15 'Equilibria of Other Reaction Classes', sections 15.1-15.3_
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