Dichromate titrations - oxidation reduction titrations, Chemistry

Assignment Help:

Dichromate titrations - oxidation reduction titrations

These are titrations where, potassium dichromate is utilized as an oxidising agent in acidic medium. The medium is organized acidic by the make use of dilute sulphuric acid. The potential reaction is

K2Cr2O7 + 4h2SO4 → K2SO4 + Cr2 (SO4)3 + 4 H20 + 3[O]

OR Cr2 O2-7 + 14 H+ + 6e- → 2 CR3+ + 7 H2O

The solution of potassium dichromate can be directly employed for titrations. It is generally used for the estimation of ferrous salts and iodides. In the titration of K2Cr2O7 versus ferrous salt either an external indicator that is potassium ferricyanide or an internal indicator that is diphenyl amine can be used.


Related Discussions:- Dichromate titrations - oxidation reduction titrations

Quantum mechanics, Q. Illustrate the Quantum Mechanics? Ans: In 1924,...

Q. Illustrate the Quantum Mechanics? Ans: In 1924, a French scientist named Louis de Broglie proposed another model for the nature of the electrons in atoms. He predicted tha

Chemical kinetics, I have the following reactions (1)NaOH+CO2+M=NaHCO3+M, K...

I have the following reactions (1)NaOH+CO2+M=NaHCO3+M, K1 (2)NaHCO3+H=Na+H2CO3, K2 (3)2NaHCO3+M=(NaHCO3)2+M, K3 ki''s are the rate constants. Suppose NaHCO3 is a dominating constit

Thermogravimatic analysis, what is thermogavimatic analysis and their instu...

what is thermogavimatic analysis and their instumental

Calculate the weight and volume of acid, A gas contains 350 ppm of H 2 S in...

A gas contains 350 ppm of H 2 S in CO 2 at 72°F and 1.53 atm pressure.  If the gas is liquified, what is the weight fraction H 2 S? You are asked to make up a laboratory soluti

Illustrate the descriptive analysis of sensory method, Q. Illustrate the de...

Q. Illustrate the descriptive analysis of Sensory method? Sensory methods may be used to quantify the perceived intensities of the sensory attributes of a product. The quantif

Magnetic moment, what is the reason for kmno4 to exibhit pink colour

what is the reason for kmno4 to exibhit pink colour

Volatile liquid, volatile liquid is placed in a open container for 15 minut...

volatile liquid is placed in a open container for 15 minutes should you expect its mas to

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd