Question: A 403 mL hydrochloric acid (HCl) solution reacts completely with sodium carbonate (Na2CO3), forming 20.1 g of carbon dioxide (CO2) according to the equation: 2

A 403 mL hydrochloric acid (HCl) solution reacts completely with sodium carbonate (Na2CO3), forming 20.1 g of carbon dioxide (CO2) according to the equation:

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

What was the concentration (in M) of the HCl solution?

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