hoá 10

T

thupham22011998

Bạn làm theo pt ion nhé:

Ta có: $n NaOH=0,1 mol; n Ba(OH)_2=0,2 mol$ \Rightarrow $n OH^-=0,5 mol$

$n HCl=0,002 V mol ; n H_2SO_4=0,001V mol$ \Rightarrow $n H^+=0,004V mol$

$H^++OH^--->H_2O$

Theo pt, ta có: $n H^+=n OH^-$

\Rightarrow $V=125 ml$
 
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