When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon d

Question

When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced.

Question 17 of 20 Map General Chemistr Donald McQuarrie. Peter A. Rock Ethan Gallogly University Science Books presented by Sapling Leaming When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced CaCO3(s)+2HCI(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 10.0 g of hydrochloric acid? Number g CaCI Which reactant is in excess and how many grams of this reactant will remain after the reaction is complete? Number O CaCO3 O HcI g of O Previous Previous Give Up & View Solution Check Answer Next Ext D check Answer Give Up & View Solution Next Exit Hint

Explanation / Answer

Find mol proportions

mol of CaCO3 = mass/MW = 32/100.01 = 0.32 mol

mo of HCl = mass/MW = 10/36.5 = 0.273972 mol

ratio is 1:2 so

0.273972 mol of HCl = 1/2*0.273972 = 0.136986 mol of CaCO3

then

mol of CaCl2 = mol of CaCO3

0.136986 mol of CaCl2 = 0.136986 mo of CaCO3

mass = mol*MW = 0.136986*110.98 = 15.202 g

b)

leftover is that of CaCO3

mass left --> 32-0.136986*100 = 18.3014 g of CaCO3 are left

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