Chrome yellow, PbCrO4, is the yellow pigment used in road markings. At 15 °C, the solubility product of PbCrO4 is 1.69 × 10-14 mol2 dm-6 . (a) Write an expression for the solubility product of PbCrO4. [1] (b) Calculate the solubility of PbCrO4 [3]
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Chrome yellow, PbCrO4, is the yellow pigment used in road markings.
At 15 °C, the solubility product of PbCrO4 is 1.69 × 10-14 mol2
dm-6
.
(a) Write an expression for the solubility product of PbCrO4. [1]
(b) Calculate the solubility of PbCrO4 [3]
(c) On adding concentrated aqueous lead(II) nitrate dropwise to 0.010 mol dm-3 potassium
chromate (VI), what is the concentration of lead(II) ions when the first trace of
precipitate appears? [3]
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