A 25.0 mL. sample of 0.10 M HCl is titrated with 0.10 M NaOH. What is the pH of the solution at the points where 24.9 and 25.1 mL of NaOH have been added?
Fixed volume of 0.1 M benzoic acid (pK_(a)=4.2) solution is added into 0.2 M sodium benzoate solution and formed a 300 mL, resultant acidic buffer solution. If pH of this buffer solution is 4.5 then find added volume of benzoic acid :
Objective question (single correct answer). i. H_(3) PO_(4) is a tribasic acid and one of its salt is NaH_(2) PO_(4) . What volume of 1M NaOH solution should be added to 12 g of NaH_(2) PO_(4) to convert in into Na_(3) PO_(4) ? a. 100 mL b. 2 mol of Ca (OH)_(2) c. Both d. None iii. The normality of a mixture obtained mixing 100 mL of 0.2 m H_(2) SO_(4) with 100 mL of 0.2 M NaOH is: a. 0.05 N b. 0.1 N c. 0.15 N d. 0.2 N iv 100 mL solution of 0.1 N HCl was titrated with 0.2 N NaOH solutions. The titration was discontinued after adding 30 mL of NaOH solution. The reamining titration was completed by adding 0.25 N KOH solution. The volume of KOH required from completing the titration is: a. 70 mL b. 35 mL c. 32 mL d. 16 mL
A solution of weak acid HA was titrated with base NaOH. The equivalent point was reached when 40 mL. Of 0.1 M NaOH has been added. Now 20 mL of 0.1 M HCl were added to titrated solution, the pH was found to be 5.0 What will be the pH of the solution obtained by mixing 20 mL of 0.2 M NaOH and 20 mL of 0.2 M HA?
When 10ml of 0.1 M acetic acid (pK_(a)=5.0) is titrated against 10 ml of 0.1 M ammonia solution (pK_(b)=5.0) , the equivalence point occurs at pH
100ml of 0.2 M H_(2)SO_(4) is added to 100 ml of 0.2 M NaOH . The resulting solution will be
When 10 ml of 0.1 M acetic acid (pk_(a)=5.0) is titrated against 10 ml of 0.1M ammonia solution (pk_(b)=5.0) ,the equivalence point occurs at pH
In the titration of solution of a weak acid HA and NaOH, the pH is 5.0 after 10 mL of NaOH solution has been added and 5.60 after 20 mL NaOH has been added. What is the value of pK_(a) for HA?
A 100 ml solution of 0.1 N HCl was titrated with 0.2 N NaOH solution. The titration was discontinued after adding 30 ml NaOH solution. The remaining titration was completed by adding 0.25 N KOH solution. The volume of KOH required for completing the titration is
The pH of a solution prepared by mixing 2.0 mL of HCI solution of pH 3.0 and 3.0 mL of NaOH of pH 10.0 is
