Question

Equimolar solutions of the following were prepared in water separately. Which one of the solution will record the highest pH?

o CaCl2
SrCl 2
Ba(NO 2 )2
MgCl2 ​

Answer 1

Ba(NO2)2

Step-by-step explanation:

Anything that contains calcium comes from a strong acid. Nitrous oxide (NO2) is a weak acid, therefore the salt it makes is less acidic than the rest --> the highest pH :)