Answer the following in details and clear handwriting: Please, I\'ll be thankful
ID: 1055736 • Letter: A
Question
Answer the following in details and clear handwriting: Please, I'll be thankful!
1. Why do chemical equations need to be balanced? What would be the problem with a nonbalanced chemical equation?
2. What is the net ionic equation for the reaction between any strong acid and any strong base?
3. If 1 mole of aqueous CoCl2 is reacted with 1 mole of aqueous (NH4)2S, how many moles of spectator ions are present in the reaction mixture?
4. If equal amounts of 1 M HCl and 1 M KOH react with each other, then what is the molarity of ions at the end of the reaction?
Explanation / Answer
1.
According to law of conservation of mass, matter can not be created and destroyed. So, in every chemical reaction the amount of substance present on both sides of the reaction must be same.
2.
The net ionic equation for the reaction between any strong acid and strong base is,
H+(aq) + OH-(aq) ----> H2O(l)