2018年中考化学真题分类汇编2我们身边的物质考点14酸碱盐和氧化物5具体物质2硫酸浓硫酸(无答案).doc

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2018年中考化学真题分类汇编2我们身边的物质考点14酸碱盐和氧化物5具体物质2硫酸浓硫酸(无答案).doc_第1页
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1酸碱盐和氧化物(18 苏州)13、下列关于浓硫酸的说法正确的是A.易挥发 B.有腐蚀性 C.无吸水性 D.密度比水水(18 梧州)15关于硫酸的说法错误的是( )A稀硫酸与锌反应可制得氢气 B稀硫酸可用于除铁锈C可将水注入浓硫酸中进行稀释 D浓硫酸可用来干燥氢气(18 巴中)48、(2 分)如图所示,电子秤上的量筒中分别盛有蒸馏水、浓硫酸,放置段时间。(1)A 中示数变小,从微粒的角度解释其原因是_。(2) B 中示数变大,说明浓硫酸具有_。

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