Question

list two observations which a student is likely to make while adding quick lime to water. Name the type of reaction and the compound obtained in the reaction.

Answer 1

the two observations are as follows.
(1) a hissing sound is heard.
(2) it starts boiling and slaked lime is obtained.

CaO + H2O➡ Ca(OH)2

the compound obtained is slaked lime.
it is a combination reaction as two reactants calcuim oxide and water combines to form a single product calcuim hydroxide which is a base.

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Answer 2

2 observations are:
1.the mixture starts boiling
2.a hissing sound is observed

this reaction is an example of combination reaction .
the compound obtained in the reaction is calcium hydroxide ca(oh)2