PAMANTASAN NG LUNGSOD NG MAYNILA (University of the City of Manila) Intramuros‚ Manila COLLEGE OF NURSING Benedict’s Solution Submitted by: Marco Antonio A. Baltazar BSN IV-3 Submitted to: Prof. Marilyn Agravante Community Health Nursing Benedict’s Solution What is Benedict’s Solution? Benedict’s solution‚ deep-blue alkaline solution used to test for the presence of the aldehyde functional group‚ - CHO. The substance to be tested is heated with Benedict’s solution; formation
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1. Create a data table to record your data from the procedure. Be sure that the data table is neat and organized and that all measurements have the correct significant figures and units. (3 points) Table of Masses Empty Dish NaHCO HCl+NaCO3 Final (Dish and Salt Product 24.35 (grams) 10.06 (grams) 40.06 (grams) 31.52 (grams) 2. Write the complete balanced equation for the reaction that occurred in this lab. Hint: H2CO3 is not a final product of the double-replacement reaction; it breaks down
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Purpose=The purpose of this lab was to combine reactants‚ which we would pick ourself‚ to make 2 grams of Copper Phosphate and another product. Background: Chemistry is the branch of science that deals with the identification of the substances of which matter is composed. Chemistry has to do with many things we use today. For example‚ fireworks are made by the chemical combining magnesium‚ titanium‚ copper‚ aluminum‚ strontium‚ or other periodical elements. Things also like making plastic‚ jewelry
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ions Reagent/ Condition; Reaction | Explanation | Oxygen supply; Combustion | Limited supply of oxygen: CO formed.Even less Oxygen: C is deposited as soot. Excess Oxygen: Complete combustion (giving CO2 and H2O) | Al2 O3 and vaporisation of alkane at 500°C; Cracking of Alkanes | Al2 O3 is used as a catalyst. Heat provides energy for breakage of C-C bonds. | UV light; Initiation step of FRS of alkanes by halogens * Not required for electrophilic addition reaction btw Halogens and alkenes
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Abstract: A qualitative analysis experiment was conducted to determine the identity of an unknown aldehyde or ketone. The tests include a Tollens test‚ a Schiff test‚ an iodoform test‚ and a derivative melting point test. The data of the first three tests was inconclusive. The final derivative melting point test was utilized to successfully determine that the unknown was the ketone‚ Propiophenone. Introduction: Qualitative analysis is a method or series of methods used to determine the
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A. Objectives and background In an experiment‚ limiting reactant affect the “amount of the product.” In the other way‚ the product this reaction produce dependent on the limiting reactant. For example‚ 1000kg O2 and 1 gram H2 to form water. In this case‚ the 1 gram of H2 will be the limiting reactant. Same thing in displacement reactant. If one of the reactants is (Mole) less than the other one‚ then that reactants becomes the limiting reactants. Once the limiting reactants will completely be ran
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groups known as aldoses. Benedict’s reagent is used to determine if a reducing sugar is present. Benedict’s reagent is used as a test for the presence of all monossacharides and generally also reducing sugars. These include glucose‚ galactose‚ mannose‚ lactose and maltose. Even more generally‚ Benedict’s test will detect the presence of aldehydes (except aromatic ones) and alpha-hydroxyl-ketones‚ including those that occur in certain ketoses. Benedict’s reagent contains blue copper(II) ions (Cu2+)
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The calculations completed for this experiment include determining the amount of Na2CO3 needed to do a full reaction. This was calculated through stoichiometry calculations: Molar mass was first calculated for CaCl2*2H2O Ca = 40.078g Cl2 = 35.453g*2 = 70.906g 2H2 = 1.00794g*4 = 4.03176g 2O = 15.9994g*2 = 31.9988g 40.078g + 70.906g + 4.03176g + 31.9988g = 147.01456g or 147.0 g CaCl2 1g CaCl2 * 2H2O x (1 mol CaCl2 *2H2O/147g CaCl2 *2H2O) = 0.0068 mol of CaCl2*2H2O Molar mass was then
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and grapefruit juice. Research: Benedict’s Reagent is a mixture of sodium compounds and copper sulphate. The copper ions are reduced by fructose (a reducing sugar) to form copper oxide‚ thus turning it from blue to a brick red/orange precipitate. The more red the precipitate is‚ the higher the concentration of reducing sugar in the solution tested. If more precipitate has formed‚ there are fewer copper ions remaining in the Benedict’s Reagent‚ therefore‚ the solution will appear less blue. This
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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
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