During the titration of a weak diprotic acid `(H_(2)A)` against a strong base `(NaOH)`, the pH of the solution half-way to the first equivalent point and that at the first equivalent point are given respectively by:
Decimolar weak monoprotic acid (pK_a = 4.8) is titrated with decimolar potash solution. What is the pH at half-equilvalence point ?
Decimolar weak monoprotic acid (pK_a = 4.8) is titrated with decimolar potash solution. What is the pH at equivalence point?
In the titration of acetic acid versus sodium hydroxide , the pH of the solution at equivalence point (whene temperature is 25^(@)C ) is :
Decimolar NH_4 OH (PK_a = 4.8) is titrated with decimolar HC1. What are the pH values at equivalence point and at one-half of the equivalence point ?
10 mLof H,A (weak diprotic acid) solutions is titrated against 0.1M NaOH. pH of the solution is plotted against volume of strong base added and following observation is made. If pH of the solution at 1^(st) equivalence point is pH_(1) and at 2^(nd) equivalnee point is pH_(2) , Cal the value (pH_(2),-pH_(1)) at 25^(@) C. Given for H_(2),A, p^(Kal) =4.6 &p^(Ka2) =8
In the titration of a solution of weak acid, HX with NaOH ,the pH is 5.8 after 10 mL of NaOH solution has been added and 6.40 after 20.0mL of the NaOH has been added. What is the ionisation constant of the acid HX ?
An acid-base titration consists of the controlled addition of a dissolved base to a dissolved acid (or the reverse). Acid and base react rapidly to neutralize each other. At the equivalence point, equivalents of reacting substances are equal. The pH during a titration changes every time with a drop of titrant added, but the rate of this change varies enormously. A titration curve, graph of pH as a function of the volume of titrant, displays in detail how the pH changes over the course of an acid base titration. Significantly. the pH changes most rapidly near the equivalence point. The exact shape of a titration curve depends on the K_(a) and K_(b) of acid and base The pH at equivalence point is:
The best indicator for detection of end point in titration of a weak acid and a strong base is
NARENDRA AWASTHI-IONIC EEQUILIBRIUM-Assertin-Reason Type Questions
