The stoichiometric relationship between the reactants and products of an aqueous

Question

The stoichiometric relationship between the reactants and products of an aqueous reaction can be used to determine different kinds of information about a reaction, such as the volume of a given molarity reactant required to produce a certain amount of product.

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)

Part A

What volume of 2.50M HCl in liters is needed to react completely (with nothing left over) with 0.500L of 0.100MNa2CO3?

Express your answer numerically in liters.

Part B

A 377-mL sample of unknown HCl solution reacts completely with Na2CO3 to form 15.1g CO2. What was the concentration of the HCl solution?

Express the molar concentration numerically.

Explanation / Answer

2 HCl + Na2CO3 ? 2 NaCl + H2O + CO2

Part A
(0.250 L) x (0.300 M Na2CO3) x (2/1) / (3.00 it M HCl) = 0.050 L HCl

Part B
(15.1 g CO2) / (44.00964 g CO2/mol) x (2/1) / (0.377 L) = 1.82 mol/L HCl

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.