

CHEM 1212K Exam 3 Practice Questions
Flashcard
•
Chemistry
•
University
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an Arrhenius acid?
Back
An Arrhenius acid is a substance that produces H+ ions in aqueous solutions.
2.
FLASHCARD QUESTION
Front
What happens to the pH at the equivalence point when titrating acetic acid with sodium hydroxide?
Back
The pH will be greater than 7 at the equivalence point.
3.
FLASHCARD QUESTION
Front
How do you determine the molar solubility of AgI in pure water given Ksp (AgI) = 8.51 × 10–17?
Back
The molar solubility of AgI is 9.22 × 10–9 M.
4.
FLASHCARD QUESTION
Front
What precipitate forms after adding 6 M HCl to a solution containing Co2+, Ba2+, Ag+, NH4+, and Cu2+?
Back
CoS is the precipitate formed.
5.
FLASHCARD QUESTION
Front
What is the pH of a 0.187 M solution of HF (Ka for HF is 6.8 × 10−4)?
Back
The pH is 1.95.
6.
FLASHCARD QUESTION
Front
Define Ksp (solubility product constant).
Back
Ksp is the equilibrium constant for a solid substance dissolving in an aqueous solution.
7.
FLASHCARD QUESTION
Front
What is the significance of the equivalence point in a titration?
Back
The equivalence point is when the amount of titrant added is stoichiometrically equivalent to the amount of substance in the sample.
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