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Question 1 · Single choice · 中档
大气中的氮是取之不尽的天然资源。下列工业生产中以氮气作反应物的是 ()
A. 工业合成氨 B. 湿法炼铜 C. 高炉炼铁 D. 接触法制硫酸
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Question 5 · Single choice · 中档
A. 黑火药爆炸:$2 \mathrm { K N O _ { 3 } } + \mathrm { C } + 3 \mathrm { S } = \mathrm { K _ { 2 } C O _ { 3 } } + \mathrm { N _ { 2 } \uparrow + 3 S O _ { 2 } }$ ↑ B. 电解饱和 NaCl 溶液制 $\mathrm { N a O H }$ $\mathrm { C l } ^ { - } + 2 \mathrm { H } _ { 2 } { \mathrm { O } } \xlongequal { \mathrm { i } \bigoplus \mathrm { H } } 2 \mathrm { O H } ^ { - } + \mathrm { H } _ { 2 } \uparrow + \mathrm { C l O } ^ { - }$ C. 重油裂解获得的丙烯制聚丙烯:$n { \mathrm { C H } } _ { 2 } { \mathrm { = C H - C H } } _ { 3 } \xrightarrow [ ] { \# \# \{ k \# \} } { \mathrm { \ f } } { \mathrm { C H } } _ { 2 } { \mathrm { - C H - C H } } _ { 3 } \exists n$ D. 向饱和氨盐水中通入过量 $\mathrm { C O } _ { 2 }$ 。$N a C l + N H _ { 3 } + H _ { 2 } O + C O _ { 2 } = N a H C O _ { 3 } \downarrow + N H _ { 4 } C l$
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Question 6 · Single choice · 中档
7.下列物质组成或性质与分离提纯方法对应关系正确的是 ()
A. 蛋白质能水解,可用饱和 $\mathrm { ~ ( ~ N H _ { 4 } ~ ) _ { 2 } S O _ { 4 } }$ 溶液提纯蛋白质 B. 乙醚与青蒿素组成元素相同,可用乙醚提取青蒿素 C. $\mathrm { C C l } _ { 4 }$ 难溶于水、比水易溶解 $\mathrm { I } _ { 2 }$ ,可用 $\mathrm { C C l } _ { 4 }$ 萃取碘水中的 $\mathrm { I } _ { 2 }$ D. 不同的烃密度不同,可通过分馏从石油中获得汽油、柴油
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