Question

Which salt has a pH < 7? KBr HCOOK CaSO4 NH4NO3

Answer 1

D

Step-by-step explanation:

CORRECT ON EDGE2020

Answer 2

Answer:
`NH_4NO_3`

Explanation: Acidic salts are those which are formed by combination of strong acid and a weak base and have acidic pH of less than 7.

Basic salts are those which are formed by combination of weak acid and a strong base and have basic pH of more than 7.

Neutral salts are those which are formed by combination of weak acid and a weak base or by combination of strong acid and a strong base and have neutral pH equal to 7.

1)
`KBr` is a neutral salt formed by combination of strong acid
`HBr` and a strong base
`KOH`.

2)
`HCOOK` is a basic salt formed by combination of weak acid
`HCOOH` and a strong base
`KOH`.

3)
`CaSO_4` is a neutral salt formed by combination of strong acid
`H_2SO_4` and a strong base
`Ca(OH)_2`.

4)
`NH_4NO_3` is an acidic salt formed by combination of strong acid
`HNO_3` and a weak base
`NH_4OH`.