Question

Which of the following exists as a solid when added to water?

CaSO4

CuCl2

Na2S

Sr(NO3)2

Answer 1

CaSO4 because it is an insoluble. Hope I could help!:-))

Answer 2

The correct answer is calcium sulfate (CaSO4)

Step-by-step explanation:

Hello!

Let's solve this!

Let's look at each of the options separately:

CaSO4: it is a solid salt at room temperature, when water is added it is transformed into plaster. It is solid with water

CuCl2: not solid with water

Na2S: it is not solid with water

Sr (NO3) 2: it is not solid with water

We conclude that the correct answer is calcium sulfate (CaSO4)