Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Define Procedure for Estimation of Iron in the Solution?
Carry out the experiment following the steps enumerated herewith:
1. Weigh 702 mg of reagent grade ferrous ammonium sulphate (NH4)2Fe (SO4)2. Dissolve it in 1000 ml distilled water. Add 5 ml of conc. sulphuric acid (or 3ml of 18 M sulphuric acid). 1 ml contains 0.100 mg of ferrous iron. Warm slightly and add 5 ml concentrated potassium permanganate (KMnO4) drop by drop until it produces a permanent colour (light pink). KMnO4 is added to oxidize the ferrous to ferric. Transfer this solution to a 1 litre volumetric flask and make the volume to 1 litre mark with distilled water. This solution contains 0.1 mg iron/ml.
2. Label a series of Borosil test tubes with blank (B), standard (Sl-S6) and sample (SA 1-4) and place them in a rack.
3. Take different volumes (0.2,0.4,0.6,0.8, 1.0 and 1.2 ml) of standard solution in the labeled tubes and make the volume to 2rnl with distilled water. Add 0.5 ml conc. sulphuric acid, 1 ml potassium persulphate and 2 ml of potassium thiocyanate to all tubes. Mix. Keep for 5 minutes for colour development. Add 9.5 ml distilled water to all tubes, mix and measure the optical density at 490nm.
4. For unknown sample make up the volume upto 100 ml of the given solution. Take 0.6 ml and 0.8 ml of the solution in duplicate and proceed just as in case of standard.
5. Draw the standard curve and calculate the amount of unknown solution present.
Enzymes of intestinal juice Aminopepetidase is an exopeptidase and cleaves peptide bonds next to N-terminal amino acids of polypeptides and oligopeptides (unlike carboxypept
Water-mill in Golden era: The water-mills were also invented in the classical period. But they came to be widely used only in the Middle Ages. The wind-mills and water-mills
Fire Alarms : Most modern fire alarm systems are electric and can be activated from several points throughout a building. These points usually consist of glass-covered switches wh
why the water is important in all the people in the world
I can''t identify which tree this is
who do u put a neddle thrwew a ballon
Look up the medications in your drug text, your nursing drug book and on the Internet. At times you may need to contact a pharmacy to get answers to your questions. You need to
Important physico-chemical properties of pantothenic acid are as follows: a) Pantothenic acid is a pale yellow oily liquid that can only be crystallized as its sodium, potassi
Gloves : Gloves should be worn when transferring toxic, radioactive and carcinogenic compounds, irritants and corrosive liquids. The practice of wearing rubber gloves continuously
Release of Energy : When the atom splits, the masses of the fragments and the neutrons produced do not add up to the mass of the original. A tiny amount of matter disappears. Th
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd