1. A standard nitric acid solution is prepared using 0.425 g of sodium carbonate, Na2CO3. Find the molarity of the acid if 33.25 mL are required to reach a permanent endpoint. 2 HNO3(aq) + Na₂CO3 (s) → 2 NaNO3 (aq) + H₂O(1) + CO₂(g) 2. A 10.0-mL sample of household ammonia solution required 27.50 mL of 0.241 M HNO3 for neutralization. Calculate (a) the molar concentration of the ammonia and (b) the mass/mass percent concentration of ammonia (17.04 g/mol), given a solution density of 0.985 g/mL. HNO3(aq) + NH3 (aq) → NH4NO3(aq) (a). (b). A 10.0 mL sample of calcium hydroxide solution required 26.85 mL of 0.225 M hydrochloric acid for neutralization. Calculate (a) the molar concentration of the base. 2 HCl(aq) + Ca(OH)2 (aq) → CaCl₂(aq) + 2 H₂O(1)
1. A standard nitric acid solution is prepared using 0.425 g of sodium carbonate, Na2CO3. Find the molarity of the acid if 33.25 mL are required to reach a permanent endpoint. 2 HNO3(aq) + Na₂CO3 (s) → 2 NaNO3 (aq) + H₂O(1) + CO₂(g) 2. A 10.0-mL sample of household ammonia solution required 27.50 mL of 0.241 M HNO3 for neutralization. Calculate (a) the molar concentration of the ammonia and (b) the mass/mass percent concentration of ammonia (17.04 g/mol), given a solution density of 0.985 g/mL. HNO3(aq) + NH3 (aq) → NH4NO3(aq) (a). (b). A 10.0 mL sample of calcium hydroxide solution required 26.85 mL of 0.225 M hydrochloric acid for neutralization. Calculate (a) the molar concentration of the base. 2 HCl(aq) + Ca(OH)2 (aq) → CaCl₂(aq) + 2 H₂O(1)
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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:POSTLABORATORY ASSIGNMENT
1. A standard nitric acid solution is prepared using 0.425 g of sodium carbonate, Na2CO3. Find
the molarity of the acid if 33.25 mL are required to reach a permanent endpoint.
2 HNO3(aq) + Na2CO3 (s) → 2 NaNO3 (aq) + H₂O(1) + CO₂(g)
2. A 10.0-mL sample of household ammonia solution required 27.50 mL of 0.241 M HNO3 for
neutralization. Calculate (a) the molar concentration of the ammonia and (b) the mass/mass
percent concentration of ammonia (17.04 g/mol), given a solution density of 0.985 g/mL.
HNO3(aq) + NH3 (aq) → NH4NO3(aq)
(a).
(b)
3. A 10.0 mL sample of calcium hydroxide solution required 26.85 mL of 0.225 M hydrochloric
acid for neutralization. Calculate (a) the molar concentration of the base.
2 HCl(aq) + Ca(OH)2 (aq) → CaCl₂(aq) + 2 H₂O(1)
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