(b) Carbon dioxide. When carbon dioxide gas is made to pass through the lime water, it turns milky.
When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of : (a) oxygen (b) carbon dioxide (c) nitrogen (d) water vapour
Question 18
Explain the following:
(a) Lime water turns milky on passing carbon dioxide gas into it. (b) Bubbles are produced when acetic acid is added to a solution of sodium hydrogen carbonate.