Multiple choice

Which of the following salts is an example of double salt?

  1. Na2SO4

  2. KCl

  3. CaSO4

  4. KNaCO3

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

KNaCO3 (potassium sodium carbonate) is a double salt. Double salts are compounds that contain two different cations that crystallize together in a fixed ratio. The other options are simple single-cation salts.