Question

explain the similarity and difference in two events namely adding naoh to water and adding cao to water ?? dont copy form net

Answer 1

As you want similarity and difference in between Sodium Hydroxide added to water and Calcium oxide added to water.

Reactions :-

1) When Sodium Hydroxide (NaOH) added to Water ⇒

NaOH + H₂O ----→ Na⁺ + OH⁻ + H₂O + Heat 

So this reaction is an Exothermic reaction because heat is produce in it.

2) When Calcium oxide (CaO) added to water ⇒

 CaO + H₂O ------→ Ca(OH)₂ + Heat 
So the reaction is an exothermic because lots of heat produce in it . 

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Explanation -:

A) ←←SIMILARITY B/W THESE TWO REACTION →→
i) Both reactions are Highly Exothermic , As Heat released in both of them. 
ii) Both reaction formed Strong Alkali solution.


B) ←←DIFFERENCE B/W THESE TWO REACTIONS→→

i) Sodium Hydroxide Dissociates to form Na⁺ and OH⁻ ion . While Calcium oxide added water to form Calcium Hydroxide which further dissociates. 
ii)  NaOH is a monoacidic base. and CaO is a Di-Acidic base.

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Hope it Helps.