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What volume of 0.160 M HCI is required for the complete neutralization of 2.00 g of NaHCO3 (sodium bicarbonate)? Please show all work look at hint

What volume of 0.160 M HCI is required for the complete neutralization of 2.00 g of NaHCO3 (sodium bicarbonate)? Please show all work look at hint

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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What volume of 0.160 M HCI is required for the complete neutralization of 2.00 g of NaHCO3 (sodium bicarbonate)? Please show all work look at hint
Carbonic acid (H₂CO3) is a weak diprotic acid with Kal = 4.43 x 10-7 and Ka2 4.73 x 10-11. When sodium bicarbonate (NaHCO3) is titrated with hydrochloric acid (HCl), it acts as a weak base according to the equation NaHCO3(aq) + HCl(aq) →H₂CO3(aq) + NaCl(aq) Suitable indicators are those that change color within the pH range for the equivalence point of a specific titration. The expected pH at the equivalence point can be calculated using pKa values. Suitable indicators for use in titrating carbonic acid or carbonate solutions are methyl orange and phenolphthalein. What volume of 0.160 M HCl is required for the complete neutralization of 2.00 g of NaHCO3 (sodium bicarbonate)? Express your answer to three significant figures and include the appropriate units. ▾ View Available Hint(s) ▼ Hint 1. How to approach the problem The phrase "complete neutralization" means the equivalence point and not necessarily the point at which the pH = 7. Because of the 1:1 mole ratio of the reactants in the equation NaHCO3(aq) + HCl(aq)→H₂CO3(aq) + NaCl(aq) the equivalence point of the titration occurs when the number of moles of HCl equals the number of moles of HCO3. To determine the volume of 0.160 MHCI needed, first calculate the number of moles of HCO3 based on the mass of NaHCO3. Then use the stoichiometry of the reaction to determine the number of moles of HC1 needed. Finally, convert the number of moles of HCl to a volume using the molarity of the solution.
Transcribed Image Text:Carbonic acid (H₂CO3) is a weak diprotic acid with Kal = 4.43 x 10-7 and Ka2 4.73 x 10-11. When sodium bicarbonate (NaHCO3) is titrated with hydrochloric acid (HCl), it acts as a weak base according to the equation NaHCO3(aq) + HCl(aq) →H₂CO3(aq) + NaCl(aq) Suitable indicators are those that change color within the pH range for the equivalence point of a specific titration. The expected pH at the equivalence point can be calculated using pKa values. Suitable indicators for use in titrating carbonic acid or carbonate solutions are methyl orange and phenolphthalein. What volume of 0.160 M HCl is required for the complete neutralization of 2.00 g of NaHCO3 (sodium bicarbonate)? Express your answer to three significant figures and include the appropriate units. ▾ View Available Hint(s) ▼ Hint 1. How to approach the problem The phrase "complete neutralization" means the equivalence point and not necessarily the point at which the pH = 7. Because of the 1:1 mole ratio of the reactants in the equation NaHCO3(aq) + HCl(aq)→H₂CO3(aq) + NaCl(aq) the equivalence point of the titration occurs when the number of moles of HCl equals the number of moles of HCO3. To determine the volume of 0.160 MHCI needed, first calculate the number of moles of HCO3 based on the mass of NaHCO3. Then use the stoichiometry of the reaction to determine the number of moles of HC1 needed. Finally, convert the number of moles of HCl to a volume using the molarity of the solution.
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