Question

Which of the following is a base?

A. HI (Hydroiodic acid)
B. H2CO3 (Carbonic acid)
C. Ca(OH)2 (Calcium hydroxide)
D. HNO3 (Nitric Acid)​

Answer 1

C. Ca(OH)2 (Calcium hydroxide)

Answer 2

C

Step-by-step explanation:

Calcium hydroxide, also known as slaked lime is a source of hydroxide ions when dissolved in aqueous solutions. Therefore, this compound is a base.