更新1:
how do you tell which is cations and which are anions
How to you solve precipitate reactions?
2016-05-31 1:24 am
like if it said aqueous solutions of potassium iodide and silver nitrate are mixed?
回答 (1)
2016-05-31 1:32 am
To solve such type of question :
Step 1 : Identify all the ions in the solutions that mixed.
Step 2 : Examine all pairs of cation and anion to identify the insoluble compound(s). The precipitate of such insoluble compound(s) is/are precipitated.
For example, the solutions of potassium iodide and silver nitrate are mixed.
Potassium iodide solution contains K⁺ and I⁻ ions, while silver nitrate solution contains Ag⁺ and NO₃⁻ ions.
KNO₃ is soluble in water, while AgI is insoluble.
Hence, AgI precipitate is formed. The net ionic equation is :
Ag⁺(aq) + I⁻(aq) → AgI(s)
Step 1 : Identify all the ions in the solutions that mixed.
Step 2 : Examine all pairs of cation and anion to identify the insoluble compound(s). The precipitate of such insoluble compound(s) is/are precipitated.
For example, the solutions of potassium iodide and silver nitrate are mixed.
Potassium iodide solution contains K⁺ and I⁻ ions, while silver nitrate solution contains Ag⁺ and NO₃⁻ ions.
KNO₃ is soluble in water, while AgI is insoluble.
Hence, AgI precipitate is formed. The net ionic equation is :
Ag⁺(aq) + I⁻(aq) → AgI(s)
收錄日期: 2021-04-18 14:58:33
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160530172442AA7fpZo