A mixture of NaHCO₃ and Na₂CO₃ has a mass of 2.50 g. When treated with HCl(aq), 665 mL of CO₂ gas is liberated with a pressure of 735 mmHg at 25°C. What is the weight percent of NaHCO₃ and Na₂CO₃ in the mixture? (See Study
Question 101 for the reactions that occur.)

Data given in question 101

You have 1.249 g of a mixture of NaHCO₃ and Na₂CO₃. You find that 12.0 mL of 1.50 M HCl is required to convert the sample completely to NaCl, H₂O, and CO₂.

What volume of CO₂ is evolved at 745 mm Hg and 25°C?

Transcribed Image Text:

NaHCO3(aq) + HCl(aq) → NaCl(aq) + H₂O(l) + CO₂(g) Na₂CO3(aq) + 2 HCl(aq) → 2 NaCl(aq) + H₂O(l) + CO₂(g)