| 1. |
If the Ka for propionic acid, HC3H5O2,
is 1.34 x 10-5, what is the Kb for the propionate anion, C3H5O2-1?
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a)
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7.46 x 104
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b)
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7.46 x 10-10
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c)
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7.46 x 1018
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d)
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1.34 x 10-10
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e)
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1.34 x 10-18
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| 2. |
1.0 M solutions of the following three salts: Al(NO3)3
NH4NO3 NaF will result in solutions that are, respectively:
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a)
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basic, neutral, acidic
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b)
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basic, acidic, acidic
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c)
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acidic, acidic, neutral
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d)
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acidic, acidic, basic
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e)
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acidic, basic, neutral
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| 3. |
Hypobromous acid, HOBr, has an acid ionization
constant of 2.5 x 10-9. Calculate the hydrogen-ion concentration in a 0.250 M
HOBr solution.
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a)
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5.0 x 10-7
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b)
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2.5 x 10-6
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c)
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5.0 x 10-6
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d)
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2.5 x 10-5
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e)
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5.0 x 10-5
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| 4. |
What is the pOH of the solution in the last
problem?
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a)
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4.60
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b)
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6.30
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c)
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7.70
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d)
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8.70
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e)
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9.40
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