The purpose of Module 11A was to test for the presence or absence of a particular set of functional groups through the use of wet chemical tests. In this manner‚ Unknown A which was a colorless solution‚ was first tested with 2‚4-DNP which after mixing for a few seconds formed a bright yellow precipitate. Although this confirms the presence of either a ketone or aldehyde group‚ one simple chemical test does not completely specify the presence or absence of other functional groups. Therefore‚ a second
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3090 3090▌ SHORT REVIEW Reaction of Diazo Compounds with Organoboron Compounds short review Huan Li‚ Yan Zhang‚ Jianbo Wang* Reaction of Diazo Compounds with Organoboron Compounds Abstract: The transition-metal-free reactions of diazo compounds with organoboron compounds are reviewed. This type of reaction provides an alternative approach for the formation of C–C‚ C–B‚ and C–Si bonds. Moreover‚ by using tosylhydrazones as diazo compound precursors and boronic acids/esters as the
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SOLVENT EXTRACTION Solvent extraction‚ also known as liquid extraction and partitioning‚ is a method to separate compounds based on their relative solubility in two different immiscible liquid‚ usually water and organic solvent. It is an extraction from one liquid phase to another liquid phrase. Liquid extraction is a basic technique in chemical laboratories‚ where it is performed using a separator funnel. This type of process is commonly performed after a chemical reaction as part of the work-up
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Glen Huang Period 9 Synthesis of Isopentyl Acetate Purpose: To prepare isopentyl acetate from isopentyl alcohol and acetic acid by the Fischer esterification reaction. Materials: West condenser‚ 250 mL round bottomed flask‚ two 250 mL flasks‚ heating mantle‚ boiling chips‚ graduated cylinder‚ sodium bicarbonate‚ isopentyl alcohol‚ glacial acetic acid‚ concentrated sulfuric acid‚ separatory funnel Procedure: 1. Place 50 mL of isopentyl alcohol in a 250 mL round bottom flask and add 60 mL
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based on carbon. The vast majority of chemical compounds are organic. S.No | Name of the chemical compound | Formula | 1 | Acetic acid formula | CH3COOH | 2 | Hydrochloric acid formula | HCl | 3 | Sulfuric acid formula | H2SO4 | 4 | Acetate formula | CH3COO- | 5 | Ammonia formula | NH3 | 6 | Nitric acid formula | HNO3 | 7 | Phosphoric acid formula | H3PO4 | 8 | Sodium phosphate formula | Na3PO4 | 9 | Calcium carbonate formula | CaCO3 | 10 | Ammonium sulfate formula | (NH4)2SO4
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whiteBoiling Point: 2880CMelting Point: 132.50CDensity: 1.314 g/cm3 | Very hazardous in case of ingestion. Hazardous in case of skin contact (irritant)‚ of eye contact (irritant)‚ of inhalation. Slightly hazardous in case of skin contact (permeator). | ethyl alcohol | | Physical State: LiquidAppearance: colorlessBoiling Point: 78.50CMelting Point: -114.10CDensity: 0.789 g/cm3 | Hazardous in case of skin contact
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defense mechanism against attack by other microbes‚ which rely on sterols as part of their biochemical make up. Initially‚ researchers looked for organisms with the ability to inhibit the incorporation of carbon-14 acetate into lipids. Broths that acted as inhibitors between acetate and lipid were then tested to see whether they would inhibit the production of lipids from tritium-labeled mevalonate. Broths which inhibited carbon-14 assimilation‚ but not lipid
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HOLIDAYS HOMEWORK Chemistry PRESENTED TO: MISS SAIMA BY: Fatima JEHANGIR GRADE: 9(O) METOHDS OF PURIFICATION & ANYLYSIS Filtration Filtration is a mechanical or physical process to separate solid particulates from fluids Filtration is a technique used to separate a solid from a liquid. The solid is separated from the liquid phase by passing the mixture over a filtering media. Filtering media is characterized by being chemically inert to the mixture
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prop | | n = 7 | hept | | n = 10 | dec | n = 4 | but | | | | | | | Hydrocarbon Suffixes Hydrocarbon Suffix Alkane ane Alkene ene Alkyne yne Common alkyl substituents CH3- methyl CH3CH2- ethyl CH3CH2CH2- propyl CH3CH2CH2CH2- butyl Branched chains Example 1 : Rule 1. Identify the longest continuous chain of carbon atoms SIX = hexane root Rule 2. Number the chain beginning at the end of the chain nearest any branching Substituent
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ANTITERMITICPROPERTYOF PLANT EXTRACT Artemisia vulgaris Linn.(Damong Maria) AND Manikarazapota Linn. (Chico) Daño Manuel Victor A. ErmoginoAlgen F. Southern Luzon State University College of Arts and Sciences B. S. Biology March 2013 Chapter I INTRODUCTION Coptotermesvastator or Philippine milk termitesare social insectsthat raise their young as a group of workers‚ soldiers and reproductive queen and king. They cause significant losses to annual and perennial
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