Postlab Questions 1. The gas formed in the test tube by the reaction of hydrochloric acid...
Postlab Questions
1. The gas formed in the test tube by the reaction of hydrochloric acid and sodium sulfite was sulfur dioxide, SO2. The other products formed were water and NaCl(aq). Write a balanced equation for the reaction that produced SO2.
a. What effect did this gas have on the acidity of the distilled water placed inside the plastic bag? Support your answer with data.
b. Write a chemical equation that shows how "acid rain" was produced from SO2 inside the zip-seal bag. (Hint: SO2 and the water itself are reactants; H2SO3 in solution is a product.
c. Describe how this activity models the production of acid rain.
d. As you know, precipitation with a pH less than 5.6 is defined as acid rain. How does the pH of your solution compare to this value?
e. If a liquid similar to the solution in the plastic bag moistened a marble statue or steel girders, what effect might it have? (Hint: Consider the results of the O2 experiment here, too)
f. a. Write an equation for the reaction between your "acid rain" (H2SO3) solution and the marble chips (CaCO3). (Hint: Carbon dioxide, CO2, and calcium sulfite solution, CaSO3,were two of three products formed.)
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Postlab Questions
1. The gas formed in the
test tube by the reaction of hydrochloric acid...
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