Tests for Carbonates using Hydrochloric Acid Flashcards by Eileen Jing

Q

How would you test for carbonates?

A

Add dilute hydrochloric acid to the sample.
Attach a delivery tube connecting the test tube containing the sample and a test tube containing limewater (calcium hydroxide, Ca(OH)₂), and bubble the gas through limewater.

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Q

What is the positive result when testing for carbonates?

A

Limewater turns cloudy

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Q

Ionic equation for the reaction using carbonates and hydrochloric acid.

A

CO₃^2-_(aq) + 2H⁺_(aq) —> CO₂_(aq) + H₂O_(l)

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