Question

A compound 'A' is used in the manufacture of cement. When dissolved in
water, it evolves a large amount of heat and forms compound 'B'.

1-Identify A and B.
2- Write chemical equation for the reaction of A with water
a
3-List two types of reaction in which this reaction may be classified
s​

Answer 1

Answer:

1) A is CaO (calcium oxide)

B is Ca(OH)2 (calcium hydroxide)

2)CaO + H2O --> Ca(OH)2 + H2 + Heat

3)This is an Exothermic reaction and

also elimination reaction

thank u

Answer 2

Answer:

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Explanation:

Compound =

a) CaO

b) Ca(OH)2

Equation..

CaO + H2O = Ca(OH)2 + Heat + light

Its exothermic reaction..

Examples i.e list =

burning of coal

Respiration