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CEE 361: Chemical Reactions - The PPM, Molarity, and Normality - Hydrofluoric Acid - Chemistry Assignment Help
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Assignment Task:
3. 150 mg of nitric acid is added to a volumetric flask and water is added to yield a final volume of 1.0 L of water,
- What kind of chemistry problem is this (strong acid, weak acid, or solubility)? Explain.
- What is the final pH when the solution has come to equilibrium?
4. Hydrofluoric acid (HF) is added to a finished drinking water at a concentration of 2 mg/L. The equilibrium constant, Ka, is 3.47 x 10-4.
- What kind of chemistry problem is this (strong acid, weak acid, or solubility)? Explain.
- Is your assumption that [F-] << [HF] valid for using an ICE table? (Hint: you need to solve the problem first, and then check your assumption.)
- Will the equilibrium concentration of fluoride (F-) fall within the recommended range of 0.8-1.8 mg/L?
5. FE-Formatted 5-1: The pH of a finished water from an excess lime softening process is 11.24. What volume of 0.0200 N sulfuric acid, in millimetres, is required to neutralize 1.00 L of the finished water? Assume the buffering capacity is zero.
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