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Mg以及Al构成的混合粉末12.6克

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硫酸与硫酸铜的混合液

2008-08-16 08:08:54|分类:

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现有一硫酸与硫酸铜的混合液,加入ag足量铁粉,充实反应后,固体质量仍为ag.则求溶液中硫酸与硫酸铜的质量之比.

H2SO4 + Fe ----> FeSO4 + H2 ; 固体质量减轻56g .

CuSO4 + Fe ----> FeSO4 + Cu ; 固体质量增加64-56=8g .

n(H2SO4):n(CuSO4)=1:7

m(H2SO4):(CuSO4)=98:7*160=7:80

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Mg以及Al构成的混合粉末12.6克

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现有一硫酸与硫酸铜的混合液,加入ag足量铁粉,充实反应后,固体质量仍为ag.则求溶液中硫酸与硫酸铜的质量之比.

H2SO4 + Fe ----> FeSO4 + H2 ; 固体质量减轻56g .

CuSO4 + Fe ----> FeSO4 + Cu ; 固体质量增加64-56=8g .

n(H2SO4):n(CuSO4)=1:7

m(H2SO4):(CuSO4)=98:7*160=7:80',

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