Question

ACID-BASE TITRATION 4) What is the purpose of the indicator? 5) Does the indicator participate in the reaction with the acid and base? 6) Define endpoint.

Answer 1

For neutralization gram equivalent of acid is become equal to the gram equivalent of base.

Purpose of Indicator ) The Indicators are used in the visual detection Base titrations. of the equivalence point in Acid- s Indicators do not participate in Chemical Reaction only Change the colour of Reaction solution due to pH_ Change Because at different pH Indicator exist in different form and which have different Colourn end point » "The point during the Acid-Base titration at which Indicator Changes the colour af Reaction mixture / Acid - Basé mixture" В4 { хаон ) oll equivalence point => The point during Acid - Bate titration at which gm equivalent of Acid is become equal to the gm. Equivalent of base? * Acid (cut-on) Ma=0.15m 160701) M = 0-10m na No. 01 nel No. Of Va = 2.50me Ht Von V6=2 n=1 Mb = 0.10N Nanom No = 1* 0.15-0.15M At Neutralisation → gm Equivalent =gmequivalent of base of Act (NOVO) Na Va NOVO Vo = Narva = 0015X2.5° = 3.75 ml 0:10 Nb