why are we use the Ammonia-Ammonium Chloride buffer solution in Complexometric Titrations?
- Anonymous1 decade agoFavourite answer
i have answered your question but here it is again.
Buffer solutions are solutions which resist change in hydronium ion and the hydroxide ion concentration (and consequently pH) upon addition of small amounts of acid or base, or upon dilution. Buffer solutions consist of a weak acid and its conjugate base (more common) or a weak base and its conjugate acid (less common). The resistive action is the result of the equilibrium between the weak acid (HA) and its conjugate base (A−):
while titrating so that the cange in colour does not occur too fast the buffer is used... otherwise you will not know the exact amount.
- Anonymous5 years ago
ammonia is a weak base so you could tell when you are mixing it with an acid. when you have mixed enough and the PH is 7 you know that the titration is complete. you mix acids with bases to neutralize them