中五chem問題

Saha

而家有２Ｍ　ＮａＯＨ　同　２Ｍ　Ｈ２ＳＯ４
點樣可以ｆｏｒｍ　ｌａｒｇｅ　ｃｒｙｓｔａｌ　ｏｆ　ＮａＨＳＯ４ only？？(thus without Na2SO4)

bobby_zamora

[QUOTE=Saha]而家有２Ｍ　ＮａＯＨ　同　２Ｍ　Ｈ２ＳＯ４
點樣可以ｆｏｒｍ　ｌａｒｇｅ　ｃｒｙｓｔａｌ　ｏｆ　ＮａＨＳＯ４ only？？(thus without Na2SO4)[/QUOTE]
............not too understand,,,,
but if you want to get ＮａＨＳＯ４..
u can use excess acid with insufficient base..
thus..incomplete neutrailzation....process...

食脾細路

唔明你想問咩..........

Raul

死
唔記得NAHSO4有冇(s)[/COLOR]添
好似冇,得(aq)

我估佢問呢樣


saha: 你呢個問題係咪書搵架?如果係既話話埋邊個丫~

Saha

呢題係呀sir俾我d功課中其中一題
bobby zamora兄的意思是否說
SO42-+H20<->HSO4-+OH-?
但這條reversible reaction始終都有一個equilibium position
即係兩面都有wor
咁用evaporation seperate 出黎點樣分開NaHSO4同Na2SO4?