Explain why phenolphthalein is used as an indicator in acid-base titration.`""^(**"**)`

Phenolphalein does not act as an indicator for the titration between

(a). IF both (A) and (R) are correct and (R) is the correct explanation of (A). (b). If both (A) and (R) are correct but (R) is not the correct explanation of (A). (c). If (A) is correct, but (R) is incorrect. (d). If (A) is incorrect, but (R) is correct. ltbr. (e) if both (A) and (R) are incorrect. Q. Assertion (A): In the titration of strong acid and strong base, phenolphthalein is used as suitable indocator. Reason (R): IN the titration of strong acid and strong base, the equivalence points lies is the pH range of (3.0-10.5) and phenolphthalein have pH range of (8.0-9.8) .

Explain the action of phenolphthalein as an indicator on the basis of Ostwald's theory.

What is the role of indicator in titration ?

Which of the following is/are true for an acid- base titration?

The suitable indicator for the titration is

20mL of 0.1M solution of compound Na_2CO_3 .NaHCO_3. 2H_2O is titrated against 0.05 M HCI . x mL of HCI is used when phenolphthalein is used as an indicator and y mL of HCI is used when methly orange is the indicator in two separate titrations. Hence (y-x) is :

20 mL of 0.1 M solution of compound NaCO_(3).NaHCO_(3).2H_(2)O is titrated against 0.05 M HCL. X mL of HCL is used when phenolphthalein is used as an indicator and y mL of HCL is used when methly orange is the indicator in two separate titrations. Hence (y-x) is:

Explain why formic acid is stronger acid than benzoic acid.

Which of the following are true for an acid- base titration?