Multiple Choice 50 questions
____ 1. Carbon dioxide is less soluble in hot water than in cold water.
____ 2. Calculate the energy released when 49.6 g Na2O reacts in the following reaction.
Na2O(s) + 2HI(g) → 2NaI(s) + H2O(l)
ΔH = –120.00 kcal
a. 0.414 kcal
b. 96.0 kcal
____ 3. Why is a nonpolar substance able to dissolve a different nonpolar substance?
a. They have similar attractive forces in their molecules.
b. They combine to produce a polar substance.
c. There is no attractive force between them.
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