Illustrated Guide to Home Chemistry Experiments

(Amelia) #1
Chapter 13 Laboratory: Chemical Equilibrium and Le Chatelier’s Principle 235

q: 5 In Part II, we observed the qualitative effect of temperature on the dynamic equilibrium of a saturated sodium chloride solution.
If you were charged with designing an experiment to obtain quantitative data, how would you proceed?


q: 6 In Part III, we observed the effect of increasing the volume of solvent on the dynamic equilibrium of a saturated sodium chloride
solution. Is it possible that, for some compounds, increasing the volume of solvent would reduce the amount of solute that dissolved?
Why or why not?


q: 7 In Part IV, we observed the effect of pressure on the dynamic equilibrium of a carbonated soft drink at two different
temperatures. The differing results at the two temperatures illustrate the concept of retrograde solubility, which is the chemist’s way
of referring to a compound that is less soluble at higher temperature. What mechanism explains the lower solubility of carbon dioxide
gas in water at higher temperatures?

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