QUALITATIVE TESTS OF CARBOHYDRATES Final Lab Report Submitted by Brittany Fitzgerald 545301 Prepared for Nancy Cook Chemistry 3501 Monday November 26, 2012 RESULTS PART A: As a result of the Benedict’s test on various sugar solutions, it was found that galactose, mannose, arabinose, ribose, lactose, fructose, maltose, and cellobiose tested positively and therefore are considered reducing sugars. Glucose, starch, sucrose, and methyl-D-glucopyranoside on the other hand tested…
2013 – 72199 ATQ 1 – Qualitative Analysis of Carbohydrates Data Sheet: A. Osazone Formation Crystals Formed? (hot) Crystals Formed? (Cold) 5% sucrose Yes (orange) Yes (yellow) 5% glucose Yes (orange) Yes (yellow) 5% fructose Yes (brown) Yes (brown) 5% maltose Yes (orange) Yes (gold) B. Molisch Test Color of Junction Glucose Purple Sucrose Purple Starch Purple C. Bial’s Test Color Change Ribose Yellow -> Dirty Green Glucose Yellow -> Dark Yellow D. Seliwanoff’s Test Observation Sucrose 1st…
OF MEDICAL SCIENCE BIOLOGY-FGS0044 LAB REPORT 3.1 : CARBOHYDRATE DETECTION TEST LAB REPORT 3.2 : PROTEIN DETECTION TEST LAB REPORT 3.3 : LIPID DETECTION TEST GROUP MEMBERS : CONTENTS NO. | TITLE | PAGE | 1 | INTRODUCTION | 3 | 2 | LAB 3.1 : CARBOHYDRATES DETECTION TEST | 5 | 3 | LAB 3.2 : PROTEINS DETECTION TEST | 8 | 4 | LAB 3.3 : LIPIDS DETECTION TEST | 12 | 5 | REFERENCES | 14 | INTRODUCTION Carbohydrates (saccharides) are molecules consist of carbon, hydrogen…
Exercise 14: Qualitative Anion Tests PURPOSE: The purpose of this experiment is to identify some commonly occurring anions & to study some of the reactions used for their identification. PROCEDURE: You must first determine to which of the three groups the various anions belong. Since no two people observe the same event in exactly the same way it is important to also conduct specific confirmation tests on the known samples of each anion. This information will help identify the anion…
Food Tests Aim: To test an unknown substance for various food substances. Apparatus/Materials: * Unknown Solution X * NaOH * Iodine * Ethanol * Copper Sulphate * Benedict’s Solution * HCl * Cold Water * Syringe * Beakers * Bunsen burner * Tripod stand * Test tubes * Dropper Introduction: This Lab shows the detection of different food sources using different tests. Some of the food tests carried out was Benedict’s test, the test…
Data Table: Qualitative Cation Tests Name Test Tube 1: HClNH3 Test Tube 2: NaOHExcess Aluminum 3+ No precipitate Slightly milky Dissolves Ammonium + No Precipitate No precipitate Calcium 2+ No Precipitate Milky white precipitate Precipitate does not dissolve Copper 2+ No precipitate Became much darker blue and milky Iron 3+ Brighter yellow Orange precipitate that then dissolves Lead 2+ Milky white precipitate Precipitate gets more milky Silver + Milky white precipitate Precipitate gets…
Write up for Qualitative Analysis 1. Introduction- This experiment is for qualitative analysis so we are trying to find out what is in a substance. In this case we are using the flame test to try and discover what is in 4 unknown sample solutions that we have been given this is done by cross referencing the colour of the flame with 6 known solutions we test beforehand. Aim- In this experiment we are attempting to distinguish what substances are in the 4 unknown solutions by cross referencing…
January 1999 B io Factsheet Example glucose fructose galactose Number 39 Carbohydrates: Revision Summary Carbohydrates contain 3 elements: Carbon (C), Hydrogen (H) and Oxygen (O). Thus, if we remove water from carbohydrates, all that remains is carbon. Carbohydrates can be divided into 3 categories; monosaccharides, disaccharides and polysaccharides (Table 1). Table 1. Structure of monosaccharides, disaccharides and polysaccharides Category Monosaccharide (made of 1 sugar molecule)…
commercial products or to carry out important chemical transformations. • This process is commonly referred to as Fermentation DEFINITION OF FERMENTATION “The process of deriving energy from the oxidation of organic compounds, such as carbohydrates, using an endogenous electron acceptor, which is usually an organic compound” • The term fermentation is derived from the latin verb "fevere" which means "to boil". FERMENTATION PROS • Extended shelf life of food (ex. Cheese) •…
QUALITATIVE TESTS FOR SOME CATIONS II CHEMISTRY 11.1 OCTOBER 5 2013 QUALITATIVE TESTS FOR SOME CATIONS II I. Introduction Qualitative analysis schemes are often based on selective precipitation of different cations. By carefully selecting reagents and conditions for reactions, groups of ions can be separated on the basis of their reactivity and the solubility of their salts. This enables the experimenter to use simple techniques with standard laboratory equipment, as well as to learn…