Question

1.) A buffer solution contains 0.267 M acetic acid and 0.348 M potassium acetate. If 0.0285 moles of hydrochloric acid are added to 125 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume change does not change upon adding hydrochloric acid)

2.) A buffer solution contains 0.334 M hydrocyanic acid and 0.226 M potassium cyanide . If 0.0144 moles of sodium hydroxide are added to 125 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume does not change upon adding sodium hydroxide. )

3.) A buffer solution contains 0.369 M ammonium chloride and 0.305 M ammonia. If 0.0423 moles of perchloric acid are added to 225 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume does not change upon adding perchloric acid)

Answer 1

kindly post different questions separately. please rate