`#AkaShi`
Gửi bạn 😼
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Bài `6` :
PTHH: `Ag_2O + 2HNO_3 -> 2AgNO_3 + H_2O`
`n_{Ag_2O}=(4,64)/232=0,02 (mol)`
`→n_{AgNO_3}=2xxn_{Ag_2O}=0,02xx2=0,04 (mol)`
`→n_{AgNO_3}=170xx0,04=6,8 (g)`
`→m_{dd\ sau\ pư}=4,64+(300xx1,59)=481,64 (g)`
`→C%_{AgNO_3}=(6,8)/(481,64)xx100%=1,41%`
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Bài `7` :
PTHH: `2AgNO_3 + BaCl_2 -> Ba(NO_3)_2 + 2AgCl`
`→n_{AgNO_3}=(16,8)/170=0,099 (mol)`
`→n_{AgCl}=n_{AgNO_3}=0,099 (mol)`
`m_{dd\ sau \ pư}=300xx1,33+16,8-0,099xx143,5=388 (g)`
`→D_{AgCl}=(388)/300=1,29 (g//ml)`
