Process for estimation of sucrose by fehling soxhlet method, Biology

Assignment Help:

Explain Procedure for Estimation of Sucrose by Fehling Soxhlet Method?

Follow the proceedure enumerated herewith and carry out the experiment:

1. Standard titration (Standardization of Fehling's solution) - Titrate 10 ml of Fehling's solution (5 ml each of Fehling A and B solutions) against standard glucose solution as described in experiment 5. From this titration calculate the amount of glucose required to reduce 10 ml of Fehling's solution.

2. Sample titration - Take the given sample of sucrose solution in 250 ml conical flask. Add 2 ml of Conc HCL and 20-30 ml of distilled water (distilled water is added to prevent charring of the sugar). Heat the flask in a boiling water bath for 20-25 minutes. Remove from the water bath and cool the flask under the tap. Neutralize the acid present in the hydrolyzed solution by adding small amounts (a small pinch at a time) of solid sodium carbonate to the flask until you see no more effervescence in the flask.

Carefully transfer all the contents of this hydrolysis flask to a 100 ml volumetric flask. Ensure that the hydrolysis flask is rinsed with a little (5-10 ml) distilled water 3-4 times and the rinsings are transferred to the volumetric flask. Make up the volume to the 100 ml mark with distilled water. Shake well and use this solution in the burette. Now, take 5 ml of Fehling A and 5 ml of Fehling B in a 100 ml conical flask. Titrate the dilute hydrolyzed sugar solution with Fehling's solution using Fehling Soxhlet increment method.


Related Discussions:- Process for estimation of sucrose by fehling soxhlet method

How much ampicillin can dissolve in 400 ml, How much ampicillin (sodium sal...

How much ampicillin (sodium sal, mw=371.40) would you dissolve in 400 mL of water to make 80 mg/ml solution of ampicillin?

Temporary partial disability - injury from an accident, Temporary Partial D...

Temporary Partial Disability - Injury from an Accident Such types of injuries which are easily recoverable and may not incapacitate the victim to perform duty apart from for

Cobalt (co) - micronutrients, Cobalt (Co) - Micronutrients The Co conc...

Cobalt (Co) - Micronutrients The Co concentration in the dry matter of plants grown in soil normally lies around 0.02 to 0.5 ppm. In soils the content varies from 1 to 40 ppm.

Death and its significance, DE A T H - It is universal. It is ...

DE A T H - It is universal. It is last event in the degenerative process of ageing. It involves widspread cell break down & cell death. There is no heart beat, n

Biochemical changes, Biochemical Changes Many workers have tried to fo...

Biochemical Changes Many workers have tried to follow the biochemical changes that precede flowering and result in meristems which give rise to flowers instead of vegetative s

Classification of fishes, Q What are the two major classes into which fishe...

Q What are the two major classes into which fishes are divided? Ans. Fishes are divided into two major classes: osteichthyes, bony fishes (tuna, sardines, salmons) , and chondr

Coevolution of plant-herbivores, There has been a perfect coevolution betwe...

There has been a perfect coevolution between plants and herbivorous animals. This has often developed into a mutually beneficial relationship. Whereas the plants have proved to be

In what form is most carbohydrate taken in the normal diet, In what form is...

In what form is most carbohydrate taken in the normal diet? Most carbohydrate is taken normal diet in as starch.

What are called transactions, What are called Transactions? The grouped...

What are called Transactions? The grouped SQL statements are known as Transactions (or) A transaction is a collection of actions embused with ACID properties.

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