Question

Carbon compounds on burning on sufficient supply of oxygen produce a gas X. When X reacts with Y it turns the solution of Y, milky. Find X and Y What are the products formed when X and Y react? And what is the colour of the product? And what is the colour of Y? *

5 points

Lime water

Calcium carbonate

White Precipitate

Carbon dioxide

colourless

X

Y

X+Y--->

colour of X+Y

colour of Y

X

Y

X+Y--->

colour of X+Y

colour of Y​

Answer 1

ANSWER

Solution of Ca(OH)

2

in water is known as limewater. Addition of CO

2

in limewater causes the formation of white coloured calcium carbonate (CaCO

3

) which turns the solution milky in appearance.

Ca(OH)

2

+CO

2

→CaCO

3

+H

2

O

Thus, it is true that carbon dioxide gas turns limewater milky.