A 0.458 g sample of anhydrous sodium carbonate Na2CO3 is dissolved in deionized water and titrated HCl. If it required 21.34 mL of HCl to neutralize the Na2CO3, what is the concentration of the HCl in mol/L? (assume that the molar mass of sodium carbonate = 105.9888 g/mol)

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".