Question

to a solution ph=6 acid is added to decrease the ph to 3 and then h is increased by?

40 ml of 0.2 HNO3, when reacted with 60ml of 0.3 N. NaOH .gave a mixed solution . what is the PH of the solution?

plz answer fast with explanation. ​

Answer 1

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• Finally, we calculate the pH from the equilibrium concentration of H+(aq): Comment: In Section 16.6 we calculated that a 0.30 M solution of CH3COOH has a pH of 2.64, corresponding to H+] = 2.3 × 10-3 M. Thus, the addition of CH3COONa has substantially decreased , [H+] as we would expect from Le Châtelier's principle.