6. Chemical Quantities & Aqueous Reactions - Part 2 of 3
6. Chemical Quantities & Aqueous Reactions / Solution Stoichiometry / Problem 8
Metals can be removed from water by precipitation.
Ca2+ (aq) + Na2CO3 (aq) → CaCO3 (s) + 2 Na+ (aq)
Fe2+ (aq) + Ca(OH)2 (aq) → Fe(OH)2 (s) + Ca2+ (aq)
If 1700 L sample of water has 4.0x10-5 M Ca2+ and 8.0x10-7 M Fe2+, calculate the moles of Na2CO3 and Ca(OH)2 needed to precipitate them.
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