06 ce 15,22 新增第45題

L.K.

[[tk_36]] 06 ce 15,22

[ 本帖最後由 L.K. 於 29-4-2008 16:57 編輯 ]

piyopiyo

15. A... Na2SO3 reduce Br2... Na2SO3 + 2HCl ---> 2NaCl + SO2 +H2O

22.must be 1 only -.-...

L.K.

why reduce.....
22.)佢邊到有neutralisation

[ 本帖最後由 L.K. 於 27-4-2008 21:25 編輯 ]

piyopiyo

原帖由 L.K. 於 27-4-2008 21:24 發表
why reduce.....
22.)佢邊到有neutralisation

15. SO3 2- is RA
If I remember correctly,scrubbers make use of CaO [[tk_02]]

L.K.

CaO+SO2------>CaSO3  is neutralisation ?

[S]【YU】

nono
srubber = spray alkaline solution to neutralize acidic gas by principle.
SO2 +H2O -> H2SO3(aq) and is neutralized.

(2) redox...neutralization does not need catalyte
(3) precipitation

Puppet

原帖由 [S]【YU】 於 27-4-2008 22:02 發表
nono
srubber = spray alkaline solution to neutralize acidic gas by principle.
SO2 +H2O -> H2SO3(aq) and is neutralized.

(2) redox...neutralization does not need catalyte
(3) precipitation

有dry scrubber
CaO(s) + SO2(g) ---> CaSO3(s) which is neutralization

L.K.

Cu(OH)2 is solid??

Zend

我考果年, 我都係唔好插手答啦 XD

L.K.

一定識哂LA
教我..