`n_[FeO]=[14,4]/72=0,2(mol)`
`a)PTHH:`
`FeO + 2HCl -> FeCl_2 + H_2 O`
`0,2` `0,4` `0,2` `(mol)`
`b)m_[FeCl_2]=0,2.127=25,4(g)`
`c)m_[dd HCl]=[0,4.36,5]/10 .100=146(g)`
`d)C%_[FeCl_2]=[25,4]/[14,4+146].100~~15,84%`
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