Find minimum concentration of compound that added to naf
Calculate the minimum concentration of Cr3+ that must be added to 0.095 M NaF in order to initiate a precipitate of chromium(III) fluoride. (For CrF3, Ksp = 6.6 × 10-11.)
a. 0.023 M b. 0.032 M c. 7.7 × 10-8 M d. 2.9 × 10-9 M e. 6.9 × 10-10 M
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