有normal salt ,有acid salt..咁有冇alkali salt

Apart from normal salts and acid salts, there are also basic salts (but seldom use the term alkali salts).

A basic salt（鹼式鹽 / 鹽基式鹽）is a compound that is a base and a salt. The compound can be formed by incomplete neutralization of a base or an alkali. For example, copper(II) carbonate hydroxide, Cu2(OH)2CO3, is a basic salt.

2007-02-06 23:52:45 補充：
The solution of a salt may be neutral, acidic or alkaline. However, this is NOT the case of normal salt (e.g.Na2CO3), acid salt (e.g. NaHCO3), or basic salt (e.g Pb(OH)2CO3).

2007-02-07 00:00:22 補充：
我不敢說沒有『salt base』這名詞，但這數十年來由讀書、在化學方面工作、到現在退休，未在任何化學書及網頁中見過，亦未在想起物理化學或分析化學有這樣的概念。有沒有這名詞不重要，但科學是進步的，死抱著三十年前、三十五年前的筆記（如果是真的話）不放，實在有點那個。

有normal salt ,yes,
formation of normal salt CONDITION
STONG BASE reacts with STRONG ACID
eg. NaOH(aq) + HCl(aq) -------> NaCl(s) + H2O(l)
e.g. NaOH (aq)+ H2SO4 (aq)-------> NaSO4 (s) + H2O(l)
for those salts don't undergo hydrolysis that means when they dissolve in water ,the pH value of the water will not be acidic or alkaline.

有acid salt..yes
formation of acid salt CONDITION
WEAK BASE reacts with STRONG ACID
e.g NH3 (aq) + HCl(aq) ------> NH4Cl
e.g.NH3 (aq) + HNO3 (aq) --------> NH4NO3(aq)
for those salts do undergo hydrolysis that means when they dissolve in water ,the pH value of the water will decrease [pH細過7].acidic solution forms

咁有冇alkali salt yes
它的名叫basic salt 不是alkali salt
formation of alkaline salt CONDITION
STRONG BASE reacts with WEAK ACID
e.g. NaOH(aq) + CH3COOH(aq) --------> CH3COO-Na+ + H2O(l)
e.g.NaOH(aq) + H3PO4(aq) --------> NaH2PO4 + H2O(l)
the salt do undergo hydrolysis that means when they dissolve in water ,the pH value of the water will increase [pH大過7].acidic solution forms

summary table:
reagents----------------------------------生成的鹽溶水時pH值 ---------nature of salt
STONG BASE + STRONG ACID--------等如7-------------------遇水時不會水解
WEAK BASE + STRONG ACID---------細過7-------------------遇水時會水解
STRONG BASE + WEAK ACID---------大過7-------------------遇水時會水解

strong acid Ka = 1
moderate acid Ka > 10 power -3
weak acid Ka < 10 power -3

I hope my information helps you.

Alkali 不會變成 Alkali Salt, 因為 Alkali 是 Salt Base

Acid + Alkali --> Salt + Water

Common Salt 是 Salt 的一種

HCl + NaOH --> NaCl (common salt) + H20

Acid 的 ion (Cl-) 是Acidic Salt 的基本成分

Alkali 的 ion (OH-) 不進入Salt 的成分