Question

What happens when you keep blowing in a blow tube which is filled with lime water?

• A. limewater turns milky
• B. after sometime white insoluble solid settles
• C. lime water turns black
• D. gas is formed

Answer 1

Answer: (A), (B)

The correct options are
A

limewater turns milky

B

after sometime white insoluble solid settles

When air is blown continuously in a blow tube which is filled with lime water, the following reaction takes place.

$\text{carbon dioxide (the air blown) + calcium hydroxide(lime})\to \text{calcium carbonate}$

$C{O}_2+Ca(OH{)}_2\to CaC{O}_3$

Lime water turns milky due to the formation of Calcium carbonate and settles down as a precipitate.