What is the pH of a solution with a hydronium (H3O+) concentration of 10-4 M? Is the solution acidic, neutral, or basic?

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
Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.129QP: Tartaric acid is a weak diprotic fruit acid with Ka1 = 1.0 103 and Ka2 = 4.6 105. a Letting the...
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Complete the following questions, neatly showing all your work.
1) What is the pH of a solution with a hydronium (H3O+) concentration of 10-4 M? Is the
solution acidic, neutral, or basic?
2) 150.0 mL of a nitric acid (HNO3) solution is titrated to its bromothymol blue endpoint with
48.33 mL of a 1.117 M KOH solution. What is the concentration of the nitric acid
solution?
3) A company needs to verify the amount of nitrogen in their new "QuikGreen" fertilizer
product. To test the nitrogen content, a 5.01 g sample of fertilizer is dissolved in 100.0
mL of water, and powdered aluminum and sodium hydroxide are added. The mixture is
left to react and then heated to remove any dissolved NH3, which is transferred to a flask
containing 50.0 mL of 0.989 M hydrochloric acid where it undergoes a neutralization
reaction. The HCI solution is then titrated to a methyl red endpoint using 11.74 mL of
0.251 M sodium hydroxide.
a) How many grams of nitrate were in the original sample?
b) The first N-P-K fertilizer number represents percent nitrogen. Based on your
answer, what is the percent nitrogen in the tested fertilizer sample?
Transcribed Image Text:Complete the following questions, neatly showing all your work. 1) What is the pH of a solution with a hydronium (H3O+) concentration of 10-4 M? Is the solution acidic, neutral, or basic? 2) 150.0 mL of a nitric acid (HNO3) solution is titrated to its bromothymol blue endpoint with 48.33 mL of a 1.117 M KOH solution. What is the concentration of the nitric acid solution? 3) A company needs to verify the amount of nitrogen in their new "QuikGreen" fertilizer product. To test the nitrogen content, a 5.01 g sample of fertilizer is dissolved in 100.0 mL of water, and powdered aluminum and sodium hydroxide are added. The mixture is left to react and then heated to remove any dissolved NH3, which is transferred to a flask containing 50.0 mL of 0.989 M hydrochloric acid where it undergoes a neutralization reaction. The HCI solution is then titrated to a methyl red endpoint using 11.74 mL of 0.251 M sodium hydroxide. a) How many grams of nitrate were in the original sample? b) The first N-P-K fertilizer number represents percent nitrogen. Based on your answer, what is the percent nitrogen in the tested fertilizer sample?
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