Problem: Hydrochloric acid HCl reacts with sodium carbonate Na2CO3, forming sodium chloride NaCl, water H2O, and carbon dioxide CO2. This equation is balanced as written:2HCl(aq)+Na2CO3(aq) = 2NaCl(aq)+H2O(l)+CO2(g)A 581-mL sample of unknown HCl solution reacts completely with Na2CO3 to form 15.1 g CO2-. What was the concentration of the HCl solution? Express the molar concentration numerically.

FREE Expert Solution

To determine concentration (in M) of HCl needed to react with Na2CO3  to produce 15.1 g CO2:


Molarity (M) =moles of soluteLiters of solution


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Problem Details

Hydrochloric acid HCl reacts with sodium carbonate Na2CO3, forming sodium chloride NaCl, water H2O, and carbon dioxide CO2. This equation is balanced as written:

2HCl(aq)+Na2CO3(aq) = 2NaCl(aq)+H2O(l)+CO2(g)

A 581-mL sample of unknown HCl solution reacts completely with Na2CO3 to form 15.1 g CO2-. What was the concentration of the HCl solution? Express the molar concentration numerically.

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