Lead(II) carbonate, PbCO3, is one of the components of thepassivating layer that forms inside lead pipes. (a) If the Kspfor PbCO3 is 7.4 x 10 - 14 what is the molarity of Pb2+ ina saturated solution of lead(II) carbonate? (b) What is theconcentration in ppb of Pb2+ ions in a saturated solution?(c) Will the solubility of PbCO3 increase or decrease as thepH is lowered? (d) The EPA threshold for acceptable levelsof lead ions in water is 15 ppb. Does a saturated solution oflead(II) carbonate produce a solution that exceeds the EPAlimit?

Answered: Lead(II) carbonate, PbCO3, is one of…

Living By Chemistry: First Edition Textbook

1st Edition

ISBN:9781559539418

Author:Angelica Stacy

Publisher:Angelica Stacy

ChapterU4: Toxins: Stoichiometry, Solution Chemistry, And Acids And Bases

SectionU4.15: Holey Moley: Preparing Solutions

Problem 8E

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Lead(II) carbonate, PbCO₃, is one of the components of the
passivating layer that forms inside lead pipes. (a) If the Ksp
for PbCO₃ is 7.4 x 10^{- 14} what is the molarity of Pb²⁺ in
a saturated solution of lead(II) carbonate? (b) What is the
concentration in ppb of Pb²⁺ ions in a saturated solution?
(c) Will the solubility of PbCO₃ increase or decrease as the
pH is lowered? (d) The EPA threshold for acceptable levels
of lead ions in water is 15 ppb. Does a saturated solution of
lead(II) carbonate produce a solution that exceeds the EPA
limit?

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