Chemistry / Selective Precipitation
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Solution: Will a precipitate form when 10 mL of 0.015 M [Hg +] and 10 ...

Question

Will a precipitate form when 10 mL of 0.015 M [Hg +] and 10 mL of 0.015 M [SO 42−] are mixed? Ksp of Hg2SO4 is 6.5x10−7.

a. Yes; Q = 3.4 × 10 −6 which is larger than Ksp, a precipitate will form.

b. No; Q = 3.4 × 10 −6 which is larger than Ksp, a precipitate will not form.

c. Yes; Q = 4.2 × 10 −7 which is smaller than Ksp, a precipitate will form.

d. No; Q = 4.2 × 10 −7 which is smaller than Ksp, a precipitate will not form.

e. No; Q = 3.4 × 10 −12 which is smaller than Ksp, a precipitate will not form.