中六chem,急!!

有冇人知個procedures點寫?
--------------------------------------------------------------------------------
張紙上面既 introduction係話: in this technique, the sodium chlorate(I) is allowed to react with an excess of potassium solution in the presence of acid, liberating iodine, which is then titrated against standard sodium thiosulphate solution.

Procedures: work out your own detail procedure yourselves
Note. 1 carry out 4 titrations altogether to yield three consistent results.
          2 when the reaction mixture becomes pale yellow, add a drop of starch indicator and carry on titration to the end-point

咁其實我暇想知係個sodium chlorate(I) 同potassium solution 洗唔洗稀釋既呢?
請切換完整版來瀏覽圖片和連結

[[i] 本帖最後由 EidolonAngel 於 2006-9-23 06:02 PM 編輯 [/i]]

你做咩實驗先-.-
首先寫哂要用咩apparatus同chemical
之後就咁寫-.-你睇多d, 寫多幾次應該會好d
add野既時候一定要known mass, volume, 同埋known molarity
一定要寫實數...唔係既話扣分-.-
我識既有限, 淨係幫到你咁多

張紙最主要既係得上面果d.....有冇人可以寫比我睇下呢....

幫唔到你= ="
書入面教既係得IO3- + 2I- + 6H+  -->2I2 +3H2O
冇教過用sodium chlorate-.-

另外, potassium整唔到solution喎-.-
一放落水就爆炸-.-.....
係咪potassium iodide呀-.-?

[[i] 本帖最後由 幽魂『Phantom』 於 2006-9-23 09:35 PM 編輯 [/i]]

係- -....