CHM135H1 Lecture Notes - Lecture 23: Acids In Wine, Sulfur Dioxide, Acid Rain
31 Oct 2018
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Chm135: lecture 22 applications of equilibria (part 1/3) October 29, 2018 (relevant reading: chemistry 2nd ed. Buffers: henderson hasselbalch equation, buffer capacity and range ph titration curve, neutralization, equivalence point. Excluded: solubility equilibria, measuring ksp and calculating solubility from ksp, factors that affect solubility, precipitation of ionic compounds, separation of ions by selective precipitation, qualitative analysis. The ph of many lakes and streams must remain near 5. 5 for plan and aquatic life to flourish. The ph of human blood, has to be controlled at a value of 7. 4. Gastric acid (or stomach acid), is a digestive fluid, formed in the stomach and is mostly consisting of hcl and has to be at ph = 1. 5 3. 5. Any form of precipitation with acidic components: rain, snow, fog, hail or even dust. What causes acid rains: burning oil, gas and coal in power stations releases sulphur dioxide so2 into the atmosphere.
