Question

Sreeja said calcium oxide when reacts with water forms a colourless solution do you agree for this. If it is answer the following questions:

1 ) what happens when calcium oxide reacts with water.
2) what are the products formed.
3) how do you test weather the product is acidic or basic solution.
4) write the chemical equation for this solution.

Please answer

Answer 1

Yes, Sreeja is correct.

1) When calcium oxide reacts with water, Calcium hydroxide is formed with development of heat in the solution along with a hissing sound.

2) The product formed is calcium hydroxide Ca(OH)2.

3) Calcium hydroxide is a base and can be tested with a red litmus paper, pH paper or by reacting it with a known acid.

4) CaO + H2O -----> Ca(OH)2

Answer 2

1 formation of CaCO3
2 CaCO3 and HE
3 with the help of litmus
4 CaO +H2O------>CaCO3+H2