Some titrations are done using indicators, substances that change color when hyd

Question

Some titrations are done using indicators, substances that change color when hydrogen ions are added to or taken away from the indicator molecule. The color change indicates the endpoint of the titration. Why isn't an indicator used in this titration? Reactions that involve electron transfer happen at very different rates, depending on the substances involved in the reaction and the solvent. Some happen as many as 10s times per second, and some happen billions of times slower. From a practical point of view, does it matter how fast a reaction occurs in a titration? Explain. Suppose you titrated the iron sample with 0.20 M KM11O_4 instead of 0.020 M KMnO_4. How would this affect the volume of solution used? How would this affect the accuracy of your titration?

Explanation / Answer

In few we need not use indicators for titration as some of these willl be autoindicator i.e one of them will be colored and endpoint will be appearence or disapearence of that color

Yes it matters if the reaction happens very fast then it will be easy to find the endpoint easily as we can notice the exact point where reaction equalizes each other but if reaction is slower then we may cross the endpoint but it will take time for the color change

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.