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