A 20.0 mL sample of a 0.20 M solution of the weak diprotic acid `H_(2)A` is titrated with 0.250 M NaOH. The concentration of solution at the second equivalent point is:
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:
250ml of a 1.5M solution of sulphuric acid is diluted by adding 5L of water. what is the molarity of the diluted solution?
A 1.025 g sample containing a weak acid HX (mol. Mass=82) is dissolved in 60 mL. water and titrated with 0.25 M NaOH. When half of the acid was neutralised the pH was found to be 5.0 and at the equivalence point the pH is 9.0. Calculate mass precentage of HX in sample :
When 100 mL of 0.1 M NaCN solution is titrated with 0.1 M HCl solution the variation of pH of solution with volume of HCl added will be :
The compound whose 0.1 M solution is acidic :
When a 20 mL of 0.08 M weak base BOH is titrated with 0.08 M HCl, the pH of the solution at the end point is 5. What will be the pOH if 10 mL of 0.04 M NaOH is added to the resulting solution? [Given : log 2=0.30 and log 3=0.48]
10 mL of H_(2)A (weak diprtic acid) solutio is titrated against 0.1M NaOH. pH of the solution is plotted against volume of strong base added and following obserbation is made Ip pH of the solution at first equivalence point is pH_(1) and at secnd equibalence point is pH_(2^.) Calculate the value of (pH_(2)-pH_(1)) at 25^(@)C Given for H_(2)A,pK_(a_1) =4.6 and pK_(a_2) =8, log 25=1.4
A 250.0 mL sample of a 0.20M Cr^(3+) is electrolysed with a current of 96.5 A. If the remaining [Cr^(3+)] is 0.1 M, the duration of process is:
2.5 litre of 1 M NaOH solution are mixed and another 3 litre of 0.5 M NaOH solution. Then the molarity of the resulting solution is
100 mL of 0.6 M acetic acid is shaken with 2 g activated carbon . The final concentration solution after adsorption is 0.5 M. what is the amount of acetic acid adsorbed per gram of carbon ? 0.6 g, 0.3 g, 1.2 g, none of these.
NARENDRA AWASTHI-IONIC EEQUILIBRIUM-Assertin-Reason Type Questions
