103年 - 103 淡江大學 轉學考 普通化學#53298

科目：轉學考-普通化學 | 年份：103年 | 選擇題數：0 | 申論題數：9

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所屬科目：轉學考-普通化學

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申論題 (9)

1. How can both n-type and p-type semiconductors be produced from pure silicon, respectively? Explain how n-type and p-type semiconductors increase electrical conductivity over that of pure silicon?
2. At elevated temperatures, NaClC3 decomposes to produce sodium chloride and oxygen gas. A 0.8765 g sample of impure NaClO3 was heated until the production of oxygen gas ceased. The O2 gas collected over water occupied 57.2 mL at a temperature of 22°C and a pressure of 734 torr. Calculate the mass percent of NaClC3 in the original sample. (Na = 22.99, Cl = 35.45, O = 16.00. At 22°C the vapor pressure of water is 19.8 torr)
3. When the supply of oxygen is limited, iron metal reacts with oxygen to produce a mixture of FeO and Fe2C3. In a certain experiment, 40.00 g iron metal was reacted with 22.40 g oxygen. After the experiment, the iron was totally consumed, and 6.48 g O2 gas remained. Calculate the mounts of FeO and Fe2O3 formed in this experiment. (Fe = 55.85)
4. Draw all the structural and geometrical (cis-trans) isomers of C3H5CI.
(a) sodium peroxide
(b) ammonia
(c) sodium hydrogen carbonate
(d) sodium hypochlorite
(e) potassium bromate