Question

solution is prepared that is initially 0.081 M in nitrous acid (HNO,) and 0.18 M in potassium nitrite (KNO,). Complete the reaction table below, so that you could use it to calculate the pH of this solution. Jse x to stand for the unknown change in You can leave out the M symbol for molarity. [Hno,] no,] [4,0*] initial x 6 ? change final

Answer 1

Ans :-

ICF table is :

...............HNO₂ (aq)........+...............H₂O (l) <--------------------> NO₂^- (aq)..................+.................. H₃O⁺ (aq)

Initial ........0.081 M.....................................................................0.18 M............................................0.0 M

Change ....-X...............................................................................+X..................................................+X

Final.........(0.081 - X) M...........................................................(0.18 + X) M........................................X M

Here, X = Unknown change in concentration of H₃O⁺.