Question

State whether 1 M solutions of the following salts in water would be acidic, basic, or neutral. You must fully explain your answer to earn full credit. (3 points),

FeCl₃

BaI₂

NH₄NO₂

Answer 1

1) FeCl3 . it is acidic

because it is the salt of weak base and strong acid .so acidic property is dominent.

cation involve in hydrolysis : Fe+3 + 3 H2O -------------------> Fe(OH)3 + 3H+

H+ ions released by Fe+3 so it is acidic

2) BaI2 it is neutral . it is the salt of strong acid and strong base. so it is exactly neutral .

Ba(OH)2 strong base + HI strong acid

3) it is also amost neutral . because it is the salt of weak acid and weak base

weak acid HNO2 and weak base NH3