2012年高考化学试卷（大纲版）（空白卷）
2012年全国统一高考化学试卷（大纲版）一、选择题1．下列关于化学键的叙述，正确的一项是（ ）A．离子化合物中一定含有离子键B．单质分子中均不存在化学键C．含有极性键的分子一定是极性分子D．含有共价键的化合物一定是共价化合物2．能正确表示下列反应的离子方程式是（ ）A．硫酸铝溶液中加入过量氨水Al3++3OH﹣=Al（OH）3↓B．碳酸钠溶液中加入澄清石灰水Ca（OH）2+CO32﹣=CaCO3↓+2OH﹣C．冷的氢氧化钠溶液中通入氯气Cl2+2OH﹣=ClO﹣+Cl﹣+H2OD．稀硫酸中加入铁粉2Fe+6H+=2Fe3++3H2↑3．合成氨所需的氢气可用煤和水作原料经多步反应制得，其中的...
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