Standardization of copper sulphate solution, Biology

Assignment Help:

It involves the standardization of copper sulphate solution. This is same as done in the previous activity.

1)  Pipette accurately 5 ml of Solution A and Solution B in conical flask of 250 ml capacity.

2)  Heat this mixture to boiling on an asbestos gauge and add standard invert sugar solution from the burette about 1 ml less than the expected volume which will reduce the Fehling solution of say, 48 ml.

3)  Add 1 ml methylene blue indicator.

4)  Carry out the titration and complete it within 3 minutes.

5)  The change in blue  to reddish brown colour due to  cuprous oxide formation is taken as the end point.

6)  From the volume of the invert sugar solution used, the strength of CuSO4 is calculated by multiplying  the titrated value with 0.001 (mg / ml of the standard invert sugar solution). This is known as Fehling factor.


Related Discussions:- Standardization of copper sulphate solution

Coeleterates, what are the characteristics of cleavage formed in coelentera...

what are the characteristics of cleavage formed in coelenterates?

Neurosecretory systems, Neurosecretory Systems Almost all groups of m...

Neurosecretory Systems Almost all groups of multicellular animals have been investigated to find out if neurosecretory cells are present in them. Such investigations have sho

Define the community ecology of disease, Define the Community ecology of di...

Define the Community ecology of disease? Lyme disease is a debilitating infectious disease which has emerged in North America in the last two decades in the landscape context o

Define molisch's test or alpha naphthol reaction, Define Molisch's Test or ...

Define Molisch's Test or alpha naphthol reaction? The Molisch test is a common test for the existence of carbohydrates. Principle The reaction is due to the formation of

Photosynthesis, explain the role of photophosphorylation and chemiosmosis i...

explain the role of photophosphorylation and chemiosmosis in photosynthesis

What is pulmonary veins in normal pulmonary vasculature, Q. What is Pulmona...

Q. What is Pulmonary Veins in Normal Pulmonary Vasculature? The right and left upper lobe or superior pulmonary veins descend lateral to the arteries, cross in front of the hil

What are cytokines, What are Cytokines? Cytokines are polypeptides, whi...

What are Cytokines? Cytokines are polypeptides, which influence the proliferation, differentiation, metabolism and activation of cells. There are three areas in cancer that hav

Explain holding method of pasteurization, Explain holding method of pasteur...

Explain holding method of pasteurization In the holding method of pasteurization (62 o C for 30 minutes) or the high-temperature short-time (HTST), 71 o C for 15 minutes method

Citric acid cycle, Citric Acid Cycle The citric acid cycle, also known ...

Citric Acid Cycle The citric acid cycle, also known as tricarboxylic acid (TCA) cycle, lies at the heart of aerobic metabolism. it is involved in the breakdown of all three maj

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