chem question help

Question

At high temperatures, hydrochloric acid is a gas. If 0.711 L of hydrochloric acid at 73^oC and standard pressure reacts excess calcium carbonate, how many grams of water are produced?

Answer value

Answer 1

Hi Molly M.,

Bizarre question! Is the temperature implied to have boiled off the HCl from the (12N) hydrochloric acid? If so, does it still react with the "excess" CaCO3? And where is the "produced" water measured -- is it the water from the original acid, or that from the reaction H2CO3 = H2O + CO2 ? And why would you even consider the latter, given that "excess " CaCO3 would react only to Ca(HCO3)2 , not liberating ANY additional water?

As I said, a bizarre question. Possibly intended to elicit an argument such as the one above? I don't know.

--Cheers, -- Mr. d.