Homework Help: General Chemistry

Posted by Alexis on Wednesday, February 6, 2013 at 6:06am.

When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced.
CaCO3(s)+2HCl(aq)--> CaCl2(aq)+H2O (l)+CO2(g)
How many grams of calcium chloride will be produced when 32.0 g of calcium carbonate are combined with 11.0 g of hydrochloric acid?

General Chemistry - Steve, Wednesday, February 6, 2013 at 12:51pm
convert to moles and see which reagent gets used up:

32g CaCO3 = 32/100 = 0.32 moles
11g HCl = 11/36.46 = 0.30 moles

From the equation, each mole CaCO3 requires 2 moles HCl. So, only 0.15 moles of CaCO3 will be used, producing 0.15 moles CaCl2

.15 moles CaCl2 = .15*110.98 = 1.65g CaCl2
General Chemistry - typo - Steve, Wednesday, February 6, 2013 at 12:51pm
Oops 16.65g

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