Author Question: The Ka of acetic acid (HC2H3O2 ) is 1.8 10-5. What is the pH at 25.0 C of an aqueous solution that ... (Read 60 times)

Pea0909berry · **on:** Aug 27, 2018

The Ka of acetic acid (HC2H3O2 ) is 1.8 10-5. What is the pH at 25.0 C of an aqueous solution that is 0.100 M in acetic acid?

A) +2.87
B) -2.87
C) -11.13
D) +11.13
E) +6.61

Question 2

Combining aqueous solutions of BaI2 and Na2SO4 affords a precipitate of BaSO4. Which ions are spectator ions in the reaction?

A) Ba2+ only
B) Na+ only
C) Ba2+ and SO42-
D) Na+ and I-
E) SO42- and I-

Question 3

Radiation in the infrared portion of the spectrum is absorbed by ________ found in the atmosphere.

A) N2
B) O2
C) CO2
D) Ar
E) He

batool · **Reply #1 on:** Aug 27, 2018

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