Reference no: EM132953919
-Many of Ontario's lakes and fresh water systems have been contaminated by pollution-induced acid rain. To counter these effects, ecologists are attempting to neutralize fresh water systems by adding CaO(s) to the water - when in water, CaO(s) is converted to the base Ca(OH)2(aq). To synthesize CaO(s), chemists heat limestone, CaCO3(s), to produce CO2(g) and CaO(s).
-Write a balanced chemical equation for the production of CaO(s) from limestone [T/I, 1].
-If you were the chemist responsible for synthesizing CaO(s), draw a scientific diagram of the laboratory apparatus you would use in the lab. Be sure to label your diagram appropriately. [C, 5]
-As the reaction between CaO(s) and water is quite vigorous, CaO(s) can cause severe irritation when inhaled or placed in contact with moist skin or eyes. Suggest TWO appropriate safety precautions, scientists should take when working with CaO(s). [K/U, 2]
Precaution1:
Precaution 2:
-Neutralization of Lake Weslemkoon near Bancroft, ON requires 10 kg of CaO. If you had 8 kg of CaCO3 available in your lab, would you have enough starting material to completely neutralize the lake? Show all of your work. [A, 3; C, 1]
-The neutralization of lakes illustrates how important it is for scientists to make predictions using the mole. Describe ONE other example of mole calculations having practical implications on society. [C, 1]
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: -Many of Ontario's lakes and fresh water systems have been contaminated by pollution-induced acid rain. To counter these effects, ecologists are attempting to n
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