1.
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Which of the following constitutes an acid-base conjugate pair in the equilibrium below? HCl + HPO42- <==> H2PO4- + Cl-
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2.
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What is the pH of a solution that has [H3O+] = 4.18 x 10-3 M?
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3.
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What is the hydroxide concentration in a solution in which pH = 9.14?
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4.
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What is the pH of a 0.0050 M solution of NaOH?
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5.
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A 0.10 M solution of a weak acid, HA, has a pH of 3.10. What is the Ka of the acid?
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6.
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What is the pH of a 0.10 M solution of formic acid, HCO2H? The Ka of formic acid is 1.8 x 10-4.
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7.
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What are the [H3O+] and [S2-] in a 0.10 M solution of H2S? For H2S, Ka1 = 1.0 x 10-7 and Ka2 = 1 x 10-19.
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8.
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Which of the following organic acids is strongest?
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9.
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A 0.200-g sample of a solid monoprotic acid is dissolved in water to produce 15.00 mL of a solution with [H+] = 2.20 x 10-3 M, which reacts completely with 16.82 mL of 0.100 M NaOH solution. Determine the molar mass (g/mol) and the ionization constant (Ka) of this acid.
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10.
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In the reaction BF3 + NH3 -> F3B:NH3, BF3 acts as
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