bai nay lam ntn ???

Question

mot binh kin' dung tich ko doi 4,928 lit o $27,3^{0}$C va 2atm chua' oxi .Phong dien qua binh` roi dua ve nhiet do ban dau, thay ap suat la p atm.Cho hon hop khi qua KI co' du . De trung hoa luong KOH sih ra can 200ml dung dich HCl 0,4M . Tinh' hieu suat fan ung ozon hoa' va` ap' suat' p ?

viet130480 · Answer 1 · 1/4/2013 2:03:50 PM

Bình chọn tăng 1 Bình chọn giảm

$3O_2\rightarrow 2O_3$
$O_3+2KI+H_2O\rightarrow 2KOH+I_2+O_2\uparrow$
$KOH+HCl\rightarrow KCl+H_2O$
$\frac{P_o.V_o}{T_o}= \frac{P.V}{T} \Rightarrow V_o=\frac{2.4,928}{273+27,3}.\frac{273}{1}=8,96 lit\Rightarrow n_{O_2}=0,4 mol$
$\Rightarrow n_{O_3}=0,5n_{KOH}=0,5n_{HCl}=0,04 mol\Rightarrow n_{O_{2 pư}}=0,06 mol$
$\Rightarrow H=\frac{0,06.100}{0,4}=15\%$
$\Rightarrow n_{hh}=0,4-0,06+0,04=0,38 mol\Rightarrow p=2.\frac{0,38}{0,4}=1,9 atm$

Trả lời 04-01-13 02:03 PM