5.2如何正确书写化学方程式—2021-2022学年化学人教版九年级上册随堂小测
※题型：单选题※知识点：单选题※试题难度：较易<br>在高压锅炉水处理时,肼(<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/9DB72092155E4749B4021433BE8A5BC2.png"><br>)用于脱除氧气以防锅炉腐蚀,其反应的化学方程式为<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/AD0F052317D52424D0511256662BC5F7.png"><br>。根据质量守恒定律,X的化学式为( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/AA5DD1505F1D7A06A012CABC988FF45C.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/DFF4AB3F63B2FA098048171D8652A30B.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/3FD11E2AFC06B1D240106659D73AE871.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/5/264B03C27A0A2EB86DBE29323F681D72.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/8ffa627c70444d36b2aeeff528ccce57/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/37ac255f404c4768ae6e3ef1022ca256/10B12534B2ECF8EE3188FC7ECAB77834.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>黑火药爆炸时的反应为:<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/3/1DA2EDCBB85C90B5866170C8B083073A.png"><br>。则X是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/3/50D66C6D5715D5278A3D085ACB7D592C.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/3/E239530B3082F86DED9967D29BD71C95.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/3/B90E8387C03EBA3876DAFDC61F8919A9.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/3/C45AB92C2D3F6F3D494B710F00204600.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/be6b079eaf954812b8907ecb12358eaa/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>正确的化学方程式是()<br>A.<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/9/779C921B34803BDC2BDD2F41DC7851BB.png"><br>B.<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/9/57735B3536432C39A58682511D581F92.png"><br>C.<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/9/4FCBEC8A2149971FEE11E7DA7DD91963.png"><br>D.<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/9/485F62AD45A1789B1857C23BDFEA3098.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/e78e038cc2d2489ca1454b328e80c120/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：容易<br>2019年化学诺贝尔奖授予了锂电池的发明者们,锂电池工作时的反应方程式为:<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/6/2705040DEDFF8A2684E9C103A919BB84.png"><br>,则x的数值为( )<br>A.1 B.2 C.3 D.4<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/6f71e7b507d044e3910be283f8f7b281/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/f38d738217d9479b9aed7290603d47ae/4CE31DDF29F06E26B0419F99D8251C25.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>某物质在空气中燃烧的化学方程式为:<img src="https://picture2.zhihuicn.com/testImage/2/2020/10/12/9AB7690CBD86A5FBAEB6B0AAA4A48F3F.png"><br>。在“_____”中填上的数字是( )<br>A.1 4 B.2 3<br>C.3 2 D.4 1<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/21e2197fe9df4fe4888e7e944f447bb3/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/1a32e80768654dee983c690db0f2e92a/92BDDFADB570230E5B2A00B1E16E3FE2.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>写出下列有关反应的化学方程式,并注明基本反应类型。<br>1.加热高锰酸钾:_____________( )。<br>2.氢气在空气中燃烧:_____________( )。<br>3.木炭在氧气中完全燃烧:_____________( )。<br>4.实验室用液体和固体混合物制氧气:_____________( )。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/4be8322f9dfc478c9b8a10d154d1fc23/23EC7FD7D04B10F6EEC9459F83545D30.png"><br>解析<br>略<br>
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