配套习题- 如何正确书写化学方程式 -【青果学院】

1/5单选题

难度：

1.类推思维是化学解题中常用的一种思维方法，下列关于化学反应方程式的类推正确的是

-	已知	类推
A	生石灰投入到水中 CaO+H₂O===Ca(OH)₂	氧化铜投入到水中 CuO+H₂O===Cu(OH)₂
B	铁丝伸入到硫酸铜溶液中 Fe+CuSO₄===FeSO₄+Cu	金属钠投入到硫酸铜溶液中 2Na+ CuSO₄===Na₂SO₄+ Cu
C	小苏打受热分解 2NaHCO₃Na₂CO₃+CO₂↑+H₂O	碳酸氢钙受热分解 Ca(HCO₃)₂CaCO₃+ CO₂↑+ H₂O
D	细铝丝在氧气中燃烧 4Al+3O₂2Al₂O₃	细铁丝在氧气中燃烧 4Fe+3O₂2Fe₂O₃

A	A
B	B
C	C
D	D

正确答案：Qw==

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2/5单选题

难度：

2.科学家以二氧化碳和金属为原料，在一定条件下制得了金刚石，化学方程式为：
3CO₂+4Na

xR + C（金刚石），则x 、R为

A	1、Na₂CO₃
B	2、Na₂CO₃
C	4、Na₂CO₃
D	2、Na₂O₂

正确答案：Qg==

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

3/5单选题

难度：

3.下列用化学方程式表示的反应原理符合实验目的，且化学方程式书写正确的是

A	制取少量的硫酸铜：Cu（NO₃）₂ + Na₂SO₄═══ CuSO₄ + 2NaNO₃
B	用稀硫酸除去铁锈： Fe₂O₃ + 3H₂SO₄═══ Fe₂（SO₄）₃ + 3 H₂O
C	验证铜的金属活动性比银强：Cu +2 AgCl═══ CuCl₂ + 2 Ag
D	除去硝酸钾溶液中混有的少量硫酸钾 K₂SO₄+ BaCl₂═══ 2KCl+ BaSO₄↓

正确答案：Qg==

QSznlJ/miJDniankuK3msqHmnInmsonmt4DvvIzmsJTkvZPmiJbogIXmsLTmlYXplJnor6/vvJs8YnI+QuespuWQiOWPjeW6lOWOn+eQhuS5n+espuWQiOi0qOmHj+WuiOaBkuWumuW+i++8jOato+ehru+8mzxicj5D77yM5rCv5YyW6ZO25pys6Lqr5Li65LiN5rq25LqO5rC055qE5Zu65L2T77yM5Zug5q2k6ZOc5LiN6IO95LiO5YW25Y+R55Sf572u5o2i5Y+N5bqU77ybPGJyPkTmnInkuqfnlJ/mlrDnmoTnianotKjvvIzlm6DmraTnlKjmnaXpmaTmnYLlubbkuI3lkIjpgILjgII8YnI+5pWF6YCJQg==

4/5单选题

难度：

4.某发电厂烟气处理的新工艺：CH₄十2NO₂= ==N₂＋X＋2H₂O，则X的化学式为

A	CO
B	CO₂
C	O₂
D	C

正确答案：Qg==

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

5/5单选题

难度：

5.相关实验原理与化学反应方程式的书写都正确的是

A	铁丝在氧气中燃烧：4Fe+3O₂2Fe₂O₃
B	洗去试管壁上附着的铜：Cu+H₂SO₄===CuSO₄+H₂↑
C	用氢氧化钠吸收二氧化硫：2NaOH+SO₂===Na₂SO₄+H₂O
D	工业制取二氧化碳：CaCO₃CaO+CO₂↑

正确答案：RA==

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