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7_12_06_CT2 - Show your work CHEM 1131 4 Calculate[H 3 O[Cl...

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CHEM 1131 7/12/06 Concept Tests for Wednesday July 12, 2006 1. Clearly label the acid, base, conjugate acid, and conjugate base for the following reactions. Indicate whether K >1, K < 1, or K = 1. A. HCO 3 - (aq) + CH 3 COOH H 2 CO 3 (aq) + CH 3 COO - (aq) B. HCN(aq) + NH 3 (aq) CN - (aq) + NH 4 + (aq) 2. If an aqueous solution has [H 3 O + ] = 2.8 x 10 -5 , will the solution be acidic, neutral, or basic? Show your work. 3. What is the concentration of hydronium ion in an aqueous solution that has pH = 9.5?
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Unformatted text preview: Show your work. CHEM 1131 7/12/06 4. Calculate [H 3 O + ], [Cl-], and [OH-] in a 0.15 M aqueous solution of HCl. Show your work. 5. Calculate [H 3 O + ], [Ba 2+ ], and [OH-] in a 0.250 M aqueous solution of barium hydroxide. Show your work. 6. Calculate the pH of an aqueous solution at 25 °C that has been prepared by dissolving 0.26 g of calcium hydroxide in water and diluting the solution to a final volume of 0.500L. Show your work....
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