Quiz: 4.9- Acidification Lab
· Acid Rain and Global Warming
o CO2, Sulfur Dioxide, hydrogen chloride àAcidic solution
o Carbonic Acidàdissolved CO2
o Sulfur DioxideàAcid Rain
§ Comes out of Volcanoes and industrial pollution
§ Kills forest, pollutes water
· BQs 32-35
o 32.) Which city has the hardest water?
§ Denverà most Calcium Carbonate
o 33.) How much sodium chloride would a person in Memphis take in from drinking water each day or year?
§ 0.05 each day, 18.25 each year
o 35.) Why are large deposits of sodium chloride and potassium nitrate near the surface of the earth are found mostly in deserts?
§ Desert was once an ocean
§ No rain to wash away/dissolve solids at the surface
· Two Gases Lab
o Hydrogen- less dense than air; won’t escape inverted test tube
§ Biggest errorà Not waiting 30 seconds
o Carbon dioxide- more dense than air, won’t escape the upright test tube
· Acidification of Water
o Pheonol red changes color as you add CO2 into water
o The CO2 turns to Carbonic Acid lowering ph of the water
o Calcium tablet is more soluble in cap with straw
o b/c the carbonic acid lowers ph and dissolves calcium faster
· Ocean Acidification
o Ocean ph decreased 0.1
§ About a 25% drop
· Normal ocean ph to liveà 8.0-8.4
§ Lower ph will cause shelled animals (shrimps, mollusks, etc.) to not be able to build a shell