2:57 PM dcccd.blackboard.com 100% 4 of 5 c) Precipitation (rain) pH decreases EX

Question

2:57 PM dcccd.blackboard.com 100% 4 of 5 c) Precipitation (rain) pH decreases EXPLAIN: d) Pollution: increasS pH decreases EXPLAIN: 10. Explain how pH affects chemical constituents such as nutrients and heavy metals in water Electrical Conductivity (EC) 11. What does Electrical Conductivity (EC) measure? 12. What factors typically control the EC of a stream or water body: a) b) c) d) e) 13. Lake Mead is one of the largest-capacity reservoirs in the United States with a surface area of 247 sq mi and a maximum depth of 589 ft. Lake Tahoe has a surface area of 193 sq. mi. and an average depth of 989 ft a) Complete the following including units of measurement Water Body Electrical Conductivity Total Dissolved Solids TDS Lake Mead Lake Tahoe Revised: August 7, 2010

Explanation / Answer

9 a) pH decreases

During daytime photosynthesis increases the concentration of CO2 in water which is acidic in nature so decreases pH and in night the pH increases

b) pH decreases

Any form of aerobic respiration will generate the CO2 as an end product which will be responsible for decrease in pH

c) pH decreases

Normal rain has pH around 6 units. The water will precipitation reacts with the CO2 in air to form weak carbonic acid.

d) pH decreases

The byproducts of water pollution are acidic in nature so the pollution turns the water acidic in nature to dangerous levels.

Please ask rest of the questions in separate questionnaire,

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