Why do we add chloroform-methanol solution (7+3, v/v) to oil when determining the peroxide value of...
Why do we add chloroform-methanol solution (7+3, v/v) to oil when determining the peroxide value of food lipid? we used IDF method and used spectrophotometric method to get the absorbance.
Homework Answers
Answer-
For the determining the peroxide value of food lipid, the IDF method is used and the spectrophotometric method is used to get the absorbance. In this method, chloroform-methanol solution (7:3, v/v) is added to the oil which acts as reaction medium for the reaction and to dissolve the sample and to verify the oxidation of Fe(II). The complexes of the ferric ion are more stable in this medium.
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Why do we add chloroform-methanol solution (7+3, v/v) to oil
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____ What was the purpose of hydrogen peroxide and why was it
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need help filling out the last 4 columns. more specifically,
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have already been confirmed.
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Need help for questions 2 and 4
G. C. 1-7 Determination of the Dye Concentration in a Powdered Drink G. C. 1-7: PART 2 GROUP DISCUSSION QUESTIONS Lab partners' name: 1. Your TA will provide you with the correct concentration of the dye in the powdered drink solution. Calculate the percentage error for your data. (experimental value - accepted value) accepted value 2. The empirical formula for the Brilliant Blue dye is CanHyN,O,S, Na2 and the formula weight i 79286...
____ What was the purpose of hydrogen peroxide and why was it
added slowly with cooling?
HYDROBORATION-OXIDATION OF 1-HEXENE 1. In a screw cap V-vial, prepare a solution of 0.33 g of iodine in 3 mL of dry THF. Firmly tighten the cap; keep the vial closed until ready to use. 2. In a 25 mL round-bottom flask, weigh 0.12 g of sodium borohydride. Add 8 mL of dry THF; stopper the flask with a septum, and stir the mixture...
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How to do question B
2,3,4,5?
3. a) Find the solution v ote ordinary diferetinl equation with the initial coditions: b) i) Recast our third ord ODE into a system af first order ODEs af the formA.v, where v' = dv/dz f(v) and v = (y, y,y")". You should show all working to find the corresponding matrix A. Do not solve the system. 4 mark Solve it only by hand and show your complete work. Do not use a calculator...
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chem 202 determining the equilibrium constant solution set
2
need help filling out the last 4 columns. more specifically,
how do I determine "x"
heres a clearer picture, the numbers filled in the other rows
have already been confirmed.
moll' i molt m SON X blank per f ometric Determination of an Equilibri Table 2: Determining the Equilibrium Constant (Solution Set 12) directions on pp. 6-3-64 Constant Report volume of target and Retual volume Initial Solution equilibrim Fe(HO) Volumes or...
verify 1-2-3-4-5-6 and do 7 please
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