Levels Tought:
Elementary,Middle School,High School,College,University,PHD
Teaching Since: | Apr 2017 |
Last Sign in: | 234 Weeks Ago, 1 Day Ago |
Questions Answered: | 12843 |
Tutorials Posted: | 12834 |
MBA, Ph.D in Management
Harvard university
Feb-1997 - Aug-2003
Professor
Strayer University
Jan-2007 - Present
1. Identify the Brønsted acid(s) in the following reaction.
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       (Points : 1)
       HIO3
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       HIO3 and H3O+
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       H2O
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       H2O and HIO3
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Question 2.
2. Identify all Brønsted base(s) in the following reaction.
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       (Points : 1)
       H2O
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       Â
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       OH-ï€
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       More than one response is correct
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Question 3.
3. Which of the following is present in pure water? (Points : 1)
       H3O+
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       OH-
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       H2O
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       more than one response is correct
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Question 4.
4. In the following reaction, all substances are soluble, and all dissociate except H2O. Identify the spectator ions.
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HCl + KOH → KCl + H2O
(Points : 1)
       H+ and OH-
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       K+ and Cl-ï€
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       H+ and K+Â
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       C1- and OH-
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Question 5.
5. A solution for which [H+] = 1.0 x 10-3 will have a pH of (Points : 1)
       5.00
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       3.00
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       -5.00
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       -9.00
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Question 6.
6. The molar concentration of OH in a water solution is 1.0 x 10-9 The pH of the solution is (Points : 1)
       9.00
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       5.00
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       > 9.00
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       < 5.00
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Question 7.
7. Identify the substance with the lowest pH. (Points : 1)
       orange juice
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       household ammonia
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       baking soda, NaHCO3
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       milk
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Question 8.
8. Which of the following is a weak acid? (Points : 1)
       HNO3
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       HCl
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       H2CO3
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       H3SO4
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Question 9.
9. A 25.00 mL sample of H2SO4 acid solution requires 17.35 mL of 0.118 N base for titration. What is the normality of the acid solution? (Points : 1)
       0.0819 N
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       0.164 N
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       0.0409 N
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       0.236 N
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Question 10.
10. Which salt shifts the pH when dissolved in water? (Points : 1)
       KCl
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       Al(NO3)3
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       NaCl
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       NaNO3
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Question 11.
11. Which of the following mixtures would represent a buffer? (Points : 1)
       sodium chloride/hydrochloric acid
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       sodium sulfate/sulfuric acid
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       sodium formate/formic acid
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       none of these
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Question 12.
12. The buffer capacity is the amount of ____ that can be absorbed without causing significant changes in pH. (Points : 1)
       acid
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       base
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       neither acid or base
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       either acid or base
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Question 13.
13. When your liver detoxifies ethyl alcohol, the concentration of the hydrogen ion increases. This will result in: (Points : 1)
       respiratory acidosis
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       metabolic acidosis
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       respiratory alkalosis
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       metabolic alkalosis
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Question 14.
14. Which of the following would you expect to be a weak electrolyte? (Points : 1)
       acetic acid
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       sodium acetate
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       water
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       more than one answer is correct
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Question 15.
15. How many meq are contained in 25.00 mL of a 0.225 M solution of CaCl2? (Points : 1)
       5.62 x 10-3 meq
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       2.81 meq
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       1.12 x 10-2 meq
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       1.12 x 101 meq