Hóa 8

M

mua_sao_bang_98

$n_{SO_2}= 0,25 mol$

pt: $2SO_2+O_2 \rightarrow 2SO_3$

pt: $SO_3+H_2O \rightarrow H_2SO_4$

0,25 mol ......................$\rightarrow$ 0,25mol

\Rightarrow $m_{H_2SO_4}=0,25.98=24,5$

$m_{H_2SO_4}=250.5%=12,5g$

$m_{H_2SO_4bđ}=12,5+24,5=37g$

$m_{d d spu}=0,25.80+250=270g$

\Rightarrow C%=37:270.100=13,7%
 
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