What is the number of moles of hydroxide ions added? ii.Write one net ionic equation for the acid-base reaction occurring during titration (Think in context of what chemical species in solution are reacting with each other to get a color change at endpoint). iii. What is the total number of moles of hydrogen ions in the “acid rain” sample?
What is the number of moles of hydroxide ions added? ii.Write one net ionic equation for the acid-base reaction occurring during titration (Think in context of what chemical species in solution are reacting with each other to get a color change at endpoint). iii. What is the total number of moles of hydrogen ions in the “acid rain” sample?
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter15: Acids And Bases
Section: Chapter Questions
Problem 15.20QP: Strong Acids, Weak Acids, and pH Two 0.10-mol samples of the hypothetical monoprotic acids HA(aq)...
Related questions
Question
For acid solutions comprised of a moderately concentrated mixture of strong and weak
acids, the [H+] concentration is approximately equal to the concentration of the
strong acid (e.g. HNO3). This approximation applies to the acid rain experiment you are
about to carry out. In your experiment, acid rain samples will involve the following
reactions:
weak acid : HNO2 H + + NO−
strong acid : HNO3 ⎯ → H + + NO−
From these reactions, you can recognize that the strong acid, nitric acid,
completely dissociates into hydrogen ions and nitrate ions, whereas the weak
acid, nitrous acid, is predominately in its molecular form, HNO2.
B. The total acid concentration (nitric + nitrous acid) of the 10.0 mL solution of “acid rain”
is determined by an acid-base titration method. You add 5.00 mL of the titrant sodium
hydroxide with a concentration of 0.0114 M to reach the endpoint.
i. What is the number of moles of hydroxide ions added?
ii.Write one net ionic equation for the acid-base reaction occurring during titration (Think in
context of what chemical species in solution are reacting with each other to get a color
change at endpoint).
iii. What is the total number of moles of hydrogen ions in the “acid rain” sample?
iv. What is the total concentration of hydrogen ions in the “acid rain” sample?
v. What is the concentration of the weak acid, nitrous acid, in the solution of “acid rain”
considered above (in 4-A)?
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