wiz-icon
MyQuestionIcon
MyQuestionIcon
3
You visited us 3 times! Enjoying our articles? Unlock Full Access!
Question

Give a chemical tests to identify hydrogen sulphide and carbon dioxide.


Open in App
Solution

Test for hydrogen sulphide

The reaction with lead salts is the basis for the traditional test for hydrogen sulphide gas. Moist lead acetate (lead ethanoate) paper (see image, right) turns from white to silvery-grey or black when exposed to H2S.

Test for carbon dioxide

Image result for Give a chemical tests to identify hydrogen sulphide and carbon dioxide

The most effective way to test for CO2 is to bubble the gas through "limewater", a diluted solution of calcium hydroxide (slaked lime). When you bubble carbon dioxide through the solution, it forms a solid precipitate of calcium carbonate – chalk or limestone.


flag
Suggest Corrections
thumbs-up
3
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Action of Water on Calcium Carbide
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon