Variable) | 1 Pipet‚ Graduated Jumbo (5 mL)(Dependent Variable) | 1 Distilled Water(Independent Variable) | 1 Potato(Independent Variable) | 2 Beaker‚ 50 mL Plastic(Dependent Variable) | 1 Test Tube(9)‚ 13 x 100 mm(Dependent Variable) | 1 Benedict’s Reagent - 15 mL in Dropper Bottle(Dependent Variable) | 1 Stove or Microwave(Independent Variable) | 1 Aluminum Foil 12 x 12 cm(Dependent Variable) | 1 Cylinder‚ 50 mL Plastic(Dependent Variable) | 1 Rod‚ Stirring rod – Glass(Dependent Variable) | 1 Sudan
Premium Starch Protein Glucose
compound which acts as a reference in all titrimetric volumetric analysis. A secondary standard is titrants that is standardized against a primary standard or another standard solution and are used for certain types of analysis. A primary standard is a reagent that is extremely pure‚ stable‚ it’s not a hydrate/has no water of hydration and has high molecular weight. A primary standard is used to calibrate other standards referred to as working standards. Examples of primary standards for titration of acids
Premium Titration Sodium hydroxide
Stoichiometry and Limiting Reagents Theodore A. Bieniosek I. Purpose and Theory The purpose of the experiment is to study and apply the processes of stoichiometric calculation on a controlled chemical reaction. We will be adding variable amounts of reactants in a chemical reaction in order to demonstrate the effect of limiting reagents. Based on the volumes of the reactants‚ and their respective molarities‚ we can calculate the theoretical yield of the reaction and compare it to the
Premium Chemistry Chemical reaction Sodium
بسم الله الرحمن الرحيم Al-Quds University Body Fluid Lab. Report Chemical Examination of Urine Prepared By : Lucia Principles Benedict’s Test for Reducing Sugars Urinary sugars when boiled in Benedict’s reagent reduce copper sulphate to a reddish cuprous oxide precipitate in hot alkaline medium‚ the intensity of which is proportional to the amount of sugar present in the urine. The results are reported as 1+‚2+‚ etc. depending upon the colour and intensity of the cuprous oxide precipitate
Premium Oxygen Multiple myeloma Hematology
and maintained the temperature of the reaction mixture between 35-40 ̊ c by using hot water path. After that‚ 10 drops of the reaction mixture from the flask were taken after 10 minutes and added to a test tube which contained 1.00 ml of Benedict’s reagent. The test tube was placed in hot water for about 2.00 minutes and changes in color were noticed. The last step was repeated every 10.00 minutes for 6 times. The same procedure was used for carrot solution and rate of fermentation for both solutions
Premium Fermentation Juice Pasteurization
Title : The movement of substances across a semi permeable membrane Objective : To study the movement of substances across a semi permeable membrane Problem statement : What factor influences the diffusion of substances through a semi permeable membrane? Hypothesis : The diffusion of molecules across a semi permeable membrane is based on the size of the molecule Variables: a) Manipulated : Size of solute molecules b) Responding : Colour of solution c) Fixed : Temperature and time
Premium Iodine Semipermeable membrane Starch
“Use of Biuret Reagent to Test for Proteins In Food” Cindy Zhou Introduction Protein is a series of amino acids that are connected together by peptide bond. The bond is located between the end of previous amino acid‚ which is the carboxyl group‚ and the head of next amino acid‚ which is a amino group. The Biuret reagent is a solution of copper sulfate and potassium hydroxide. When peptide bond are presented‚ the copper (II) will interact with them (MadSci Network: General Biology). It is
Premium Amino acid Protein
Copper-Silver Nitrate Reaction Introduction In this experiment copper wire will be placed in a solution of silver nitrate. This single replacement reaction will produce a blue solution of copper II nitrate and solid silver. By weighing the reactants before the reaction‚ the mass of silver produced can be predicted. This theoretical yield can be compared to the actual yield of silver. Purpose Students will compare the theoretical mass of silver with the actual mass of silver from the single
Premium Silver Stoichiometry Copper
Objective: 1) To test the presence of reducing sugars which is glucose in the Benedict’s test. 2) To test the presence of non-reducing sugars which is sucrose by using Hydrolysis then Benedict’s test. 3) To test the presence of the starch by using iodine test. 4) To test the presence of lipids in corn oils when using the Sudan Ш and Emulsion tests. 5) To test the presence of proteins in an egg albumen in the Biuret’s test. 6) To test the presence of Vitamin C and ascorbic acid in the DCPIP
Premium Fructose Water Sucrose
Introduction Grignard reagents are good nucleophiles as well as strong bases (Weldegirma). It allows compounds to react with acidic compounds‚ therefor is must be free from acids as well as water during the desired reaction. Another important aspect of Grignard reagent is that refluxing is necessary to carry out the reaction (Weldegirma). The reagent has been studied for a very long time period. As early as the 1920’s‚ Grignard reagents could be identified and studied qualitatively
Premium Magnesium Oxygen Diethyl ether