Explain how the test for carbon dioxide works.

1 year ago


1 Reply




Elena Will

Need help with your studies? Find a qualified and experienced tutor on Sherpa.

Find a Tutor

1 Answer

Tara S Profile Picture

Verified Sherpa Tutor

Carbon dioxide is tested for by bubbling an unknown gas through limewater (aqueous calcium hydroxide) - if the solution goes cloudy, carbon dioxide is present. This is due to production of a white precipitate called calcium carbonate.

An experienced and enthusiastic tutor with a PhD in Molecular Biology

Interested in booking a 1-1 lesson with me?

Click here to view my profile and send me a message.
More Chemistry GCSE Questions

Need a Chemistry tutor?

Get started with a free online introductions with an experienced and qualified online tutor on Sherpa.

Find a Tutor