Last modified: Wed 03/09/2016 06:09:17 pm
ACA

Oklahoma State University

It is OK to use your textbook or lecture notes from class, but if you can answers the questions without it that is OK too.

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Answer all of the questions below. If you do not know an answer enter CNA. However, it will help me the most if you answer each question with your best intuition/idea about what would be a reasonable answer.


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I recommend having a copy of the Arrhenius Acid DCI in front of you as you are doing this ACA.

1. The chemical equation that describes how HCl(aq) behaves as an Arrhenius acid is

HCl(aq) H+(aq) + Cl-(aq)

For each of the following acids write the Arrhenius equation that describes its acidic character. (NOTE: It is a little difficult to represent the equilibrium arrow online so using a ---> (three '-' dashes and a '>' greater than character is fine. Just remember for weak acids the equilibrium symbol is best for representing the reaction arrow.)

a) HNO3(aq)

b) HC2H3O2(aq)

c) H2CO3(aq)

2. The chemical equation that describes how NaOH(aq) behaves as an Arrhenius base is

NaOH(aq) Na+(aq) + OH-(aq)

For each of the following bases write the Arrhenius equation that describes its basic character.

a) KOH(aq)

b) Ba(OH)2(aq)

3. Complete the following table by calculating the value of the missing entry. (NOTE: To express a number in scientific notation 1.00 x 10-7, enter the value as 1.00e-7.)

[H+]

[OH-]

pH

pOH

2.50 x 10-3 M

M

M

9.32 x 10-5 M

M

M

11.10

M

M

4.75

4. Is there anything about the questions that you feel you do not understand? List your concerns/questions.

5. If there is one question you would like to have answered in lecture, what would that question be?