why do we add dil.sulfuric acid in many titrations?

Answer 1

I feel that some of the responses have failed to answer the question asked, since you were not in fact asking why dil. sulphuric is used as a TITRANT but why it is often ADDED to titrations. I suspect that the titrations to which you refer are most likely to be redox titrations, where for many common oxidising agents (permanganate or chromate for instance) the presence of H+ is necessary for the reduction half-reaction to proceed and for the overall reaction to go to completion. Dilute sulphuric acid is therefore routinely added to the titrand prior to titration. Hope that helps.

Answer 2

Titration is a laboratory technique by which we can determine the concentration of an unknown reagent using a standard concentration of another reagent that chemically reacts with the unknown. This standard solution is referred to as the "titrant". We have to have some way to determine when the reaction is complete that we are using. This is referred to as the "end point" or more technically the equivalence point. At that point all the unknown has been reacted with the standard titrant and some kind of chemical indicator must let us know when that point has been arrived at.

At the equivalence point:

Number of equivalent weights of titrant = Number of equivalent weights of unknown

or

(Normality of the titrant)(Volume of titrant required to reach end point) = (Normality of unknown) (Volume of unknown)

Generally we know the Normality of the titrant since it is a standard solution. We also pre-measure the volume of the unknown. We then titrate with the standard from a buret into the container with the measured unknown and the chemical indicator until the indicator either turns color or a precipitate indicates that the end point or the equivalence point has been reached. Having the initial and final readings of the titrant buret gives us the volume of the titrant used. The only unknown in the above equation is the Normality of the unknown.

There are a number of different types of titrations.

Answer 3

while doing chemical titrations we cannot wait for a slow reaction to omplete before we add another drop thus we add dil sulphuric acid which speedens the reaction and acts as a catalyst

Answer 4

not always, during my whole gcse life, we always use hydrochloric acid (diluted) for titrations...
the acid doesn't matter as long as you can find the unknown in the situation...

Answer 5

including water to the measured pattern to be titrated won't impact the titre as there'll nevertheless be precisely a similar sort of moles of the substance this is being titrated contemporary interior the conical flask...and could hence nevertheless prefer a similar volume of answer to be added from the burette.

Answer 6

It's cheap.

Answer 7

because it's in the protocol to do so

Answer 8

why do we eat