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Homework_1_Solutions.pdf
Homework-1 Solutions. Washington University in St Louis Chem 301

2 Pages

12321
I love my wife so much that it seems to me ................ no monument in the world existed ............. my wife, leaning against it. a) what / like b) although / as if c) as though / but for d)even if / apart from

3 Pages

Intro_to_Psychology_Notes.docx
Intro to Psychology Notes. Green River College PSYC 100

8 Pages

Microeconomics_Chapter_Notes
Microeconomics_Chapter_Notesl Ellender Memorial High School AP HONORS 101

51 Pages

Lecture 1 - Introduction and Background University of Notre Dame ELECTR 555

51 Pages

Lecture 1 - Introduction and Background University of Notre Dame ELECTR 555

3 Pages

Case_Study_3.pdf
Case Study 3 National University of Singapore BSP 1005

2 Pages

111
Question Answered step-by-step Can you think of a way to modify the Benedict's Test to measure the quantity of carbohydrate in a food, rather than simply its presence/absence? Science Biology Share Question Answer & Explanation Verified Solved by verified expert Here, we propose the use of spectrophotometric quantification for reducing sugars (Benedictq) based on the qualitative method of Benedict. The protocol was validated, to verify its reproducibility and precision. Step-by-step explanation Benedict's method for reducing sugars was developed by Stanley R. Benedict for qualitative detection (Benedictnq) of glucose in urine.This method is still used in the qualitative determination of reducing sugars in the clinic, industry, and research.The reaction mechanism is based on the reducing capacity of free carbonyl groups in glucose, which are able to reduce a wide range of metal ions, including Cu2+. In an alkaline medium, copper is reduced to Cu+ and precipitates as Cu2O. The main contribution of Benedict's reagent was the rapid detection of reducing sugars by color change, using stable alkaline agents that were not very corrosive. The Benedictsq method involves the use of potassium thiocyanate and ferrocyanide to produce copper thiocyanate, which precipitates and could be titrated. With this method, Benedict established that a certain amount of glucose reduces a given amount of copper (9 mg mL-1 of copper sulfate in the reagent is reduced by 1 mg mL-1 of glucose). The procedure requires keeping the reaction components at the boiling point while dripping the problem sample to be titrated until the disappearance of the blue color. QUANTITATIVE ESTIMATION OF CARBOHYDRATES USING BENEDICT'S REAGENT: The Benedicts quantitative reagent contains the following ingredients, copper sulphate, sodium carbonate, sodium or potassium citrate, potassium thiocyanate and potassium ferrocyanide. Of these, copper sulphate has to be very accurately measured as the amount of copper sulphate reduced will correspond to the amount of glucose present in solution. Due to presence of potassium thiocyanate in Benedict's reagent a white precipitate of cuprous thiocyanate instead of red precipi­tate of cuprous oxide will be formed when copper sulphate is reduced. As the precipitate formed is white it is very easy to determine the end point. Blue tint of Benedict's reagent disappears com­pletely at this point. The small amount of potassium ferrocyanide added helps to prevent the oxidation of cuprous oxide. Sodium or potassium citrate added does not allow the formation of copper carbonate. The reaction of CuSO4 with glucose is quite complicated and a number of molecules of CuS04 are reduced by one molecule of glucose. Therefore, it is not possible to write the stoichio­metric equation for reaction between CuSO4and glucose. But it has been found that 25 ml of the above mentioned quantitative reagent corresponds to 50 mg glucose. Determination of the un­known amount of glucose will be based on this

3 Pages

Kami_Export___Lillian_De_Mello___Constant_Velocity_EXAM.pdf
Kami Export - Lillian De Mello - Constant Velocity EXAM.

2 Pages

Reading_Worksheet_2.docx
Reading Worksheet 2. Iowa State University HIST 202

17 Pages

hw0_sol.pdf
hw0_sol. Santa Monica College CS 116

20 Pages

CASH_AND_CASH_EQUIVALENTS_ACTIVITY_REVIEWER.docx
CASH AND CASH EQUIVALENTS ACTIVITY REVIEWER. National University Manila BSBA INTEGRATED

2 Pages

Braxton_Stellar_Evolution_Ranking_Task.docx
Braxton_Stellar Evolution Ranking Task. Community College of Baltimore County ASTM 101

5 Pages

fthygg
Question Answered step-by-step Question 3 (6 marks) In order to attract new students, we need your... Question 3 (6 marks) In order to attract new students, we need your helps to design a dynamic banner to promote this course and p5js. You are free to choose shapes, colors, animations ... but your implementation needsto satisfy these following constraints: a. Implement using p5js. b. Include at least 2 custom functions. c. Include at least 1 loop. d. Include animation. e. Harmony in design.

4 Pages

physics_3204_unit_2_current_electricity_worksheet_6_series_circuit.pdf
physics_3204_unit_2_current_electricity_worksheet_6_series_circuit.

4 Pages

physics_3204_unit_2_current_electricity_worksheet_6_series_circuit.pdf
physics_3204_unit_2_current_electricity_worksheet_6_series_circuit.

2 Pages

Nurs_6501_Week_1_discussion.docx
Nurs 6501 Week 1 discussion. Walden University NURS 6501

2 Pages

8.1P_Table.pdf
8.1P Table. Deakin University CS SIT111

18 Pages

Chemsheets_A2_1014_Thermodynamics_booklet_ANS.pdf
Chemsheets-A2-1014-Thermodynamics-booklet-ANS. CHE PHYSICAL C

3 Pages

Q45
Choose the best statement which represents paraphrasing: a)... 1. Choose the best statement which represents paraphrasing:
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