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AP Chemistry Chapter 4 Review
1. Write balanced chemical equations for the following reactions:
a. the decomposition of ammonium nitrate to nitrogen gas, oxygen gas, and water vapor.
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b. the reaction of sodium bicarbonate with sulruric acid to produce sodium sulfate, water, and
carbon dioxide.
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c. the treatment of pho sphorus pentachloride with water to produce phosphoric acid and /L C_>J^
hydrogen chloride.
2. 12 grams copper metal is treated with excess dilute nitric acid:
3Cu(s) + 8HNO3(aq) -> 3Cu(NO3)2(aq) + 2NO(g) + 4H2O(1)
How much nitric oxide gas (NO) is produced?
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3. Hydrazine reacts with dinitrogen tetroxide according to the equation:
2N2H4(g) + N2O4(g) -> 3N2(g) + 4H2O(g)
50.0 grams of hydrazine is mixed with 100.0 grams of dinitrogen tetroxide. How much nitrogen
gas was produced?
4. 0.1101 gram of an organic compound containing carbon, hydrogen, and oxygen was analyzed by
combustion. The amount of carbon dioxide produced was 0.2503 gram and the amount of water
produced was 0.1025 gram. A determination of the molar mass of the compound indicated a value of
approximately 115 grams/mol. Determine the empirical formula and the molecular formula of the
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5. TNT (trinitrotoluene) is prepared by treating toluene with nitric acid according to the equation:
C?H8(1) + 3HNO3(aq) ^ C7Hs(NO2)3(s) + 3H2O(1)
What mass of TNT can be made when 450 grams of toluene is treated with 1000 grams of nitric acid?