Question

(a) Solution of a substance 'X' is used for testing carbon dioxide. Write the equation of the reaction of
'X' with carbon dioxide.
(b) How is obtained ? Write chemical equation.
CBSE Class X Science SA 2 (3 Marks)

Answer 1

2KOH + CO2 -----> K2CO3 + H2O...~@lice

Answer 2

Hi

Here devil1407

a) Substance X - Calcium Hydroxide.
   Ca(OH) 2 + CO2 ------- CaCO3 + H2Cl
CaCO3 --- white precipitate.

b) Calcium Hydroxide is obtained by reaction of calcium oxide and water.
    CaO + H2O ------- Ca(OH)2 + Heat

Hope it helps u

Thanx.....Bye