CHEM+1310+Recitation+Week+15
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CHEM 1310 Recitation Week 15 Fall 2014 1. Calculate [OH - ] at 25°C for each of the following solutions and determine whether the solution is acidic, basic, or neutral. A. 0.0000759 M HClO 4 B. 1.78 x 10 -3 M HCl 2. Calculate the pH, the pOH, and and the [OH - ] for a solution of 0.037 M HBr. 3. Problem Manipulation Methodology : What is the pH of a 0.10 M NH 3 solution? The K a of NH 4 + is 5.56e-10. 4. The pH of a 0.129 M solution of a weak acid, HA, is 2.34. What is K a for the weak acid? 5. Summary Problem : The ionization constant of a very weak acid, HA, is 4.0 10 –9 . Calculate the equilibrium concentrations of H 3 O + , A, and HA in a 0.040 M solution of the acid.
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Transcript of CHEM+1310+Recitation+Week+15
CHEM 1310Recitation Week 15Fall 20141. Calculate [OH-] at 25C for each of the following solutions and determine whether the solution is acidic, basic, or neutral.A. 0.0000759 M HClO4B. 1.78 x 10-3 M HCl
2. Calculate the pH, the pOH, and and the [OH-] for a solution of 0.037 M HBr.
3. Problem Manipulation Methodology: What is the pH of a 0.10 M NH3 solution? The Ka of NH4+ is 5.56e-10.
4. The pH of a 0.129 M solution of a weak acid, HA, is 2.34. What is Ka for the weak acid?
5. Summary Problem: The ionization constant of a very weak acid, HA, is 4.0 109. Calculate the equilibrium concentrations of H3O+, A, and HA in a 0.040 M solution of the acid.
