GITARATTAN JINDAL PUBLIC SCHOOL ROHINI‚ DELHI-110085 ASSIGNMENT – 2 (2013-14) Acids‚ Bases and Salts CLASS Q1. :X SUBJECT : Chemistry What happens when chlorine is passed over slaked lime at 313 K? Write chemical equation of the reaction involved and state two uses of the product obtained. Q2. Write the scientific name and chemical formula of plaster of paris. What happens when water is added to it? Write chemical equation for the reaction and state one property of the product
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of a positive Magnesium ion (Mg+) and two negative Hydroxide ions (OH-) Usage: Milk of Magnesia is used to combat constipation and difficulties resulting from too much stomach acid. Properties: Because it contains hydroxide‚ Milk of Magnesia is able to lower the acidity of the stomach by neutralizing some of the acid. It works as a laxative by drawing in water from the intestines. Common Name: Baking Soda Scientific Name: Sodium Bicarbonate Formula: NaHCO3 Fundamental
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Chem&163 Lab Report 1 Analysis of Acids‚ Bases‚ pH and Salt Purpose: Explore various methods for determining the characteristics of acid/base solution. The goal of this experiment include the investigation of various acid/base indicators‚ calculating the change of pH with concentration‚ change of pH due to the addition of salt and different between strong and weak acids/bases. Safety and Disposal: Use extreme caution when handling concentrated acids and bases. Dispose of all solutions as
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Title: Determination of chloride by the Mohr Method Objective: To determine chloride by using Mohr Method. Introduction: The Mohr method is the method used to determine the chloride ion concentration of a solution by titration with silver nitrate. As the silver nitrate solution is slowly added‚ a precipitate of silver chloride forms. Ag+ + Cl- AgCl(s) (Ksp for AgCl is 1.810-10) The chloride ion (Cl-) is an important anion found in solids and solutions. Chloride is the predominant anion
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including heating reaction mixture under reflux‚ extraction using a separatory funnel‚ drying with anhydrous sodium sulfate‚ and refractometry. Experiment Scheme: First‚ we prepared the solvent-nucleophile medium. We combined 44mL 7.7M sulfuric acid with 4.75g ammonium chloride and 8.75g ammonium bromide‚ and we heated the mixture with stirring to dissolve the salts. We put 17mL into a separatory funnel for use in the second reaction‚ and placed the rest into a reflux apparatus for our first
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BEHAVIOUR OF AMINO ACIDS IN SOLUTION Abstract In this practical the acid-base behaviour of amino acids was assessed. Amino acids are amphoteric. They have the basic (amine) and the acidic (carboxylic) functional groups. These show the same type of equilibrium reactions that all weak acids and bases undergo‚ and the relative amount of each can be altered by adjusting the pH of the solution. For this practical glycine was used as a model to show this unique nature of amino acids. A series of
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The acid-base titration curves help to find the pKa‚ Ka‚ and pH at equivalent point. At the beginning pH for HCl is 1.90 which is lower than the 3.28 for acetic acid; thus‚ strong acid (HCl) means lower pH and weak acid (acetic acid) means higher pH. Then at the equivalent point for the titration HCl-NaOH the pH is 7‚ which mans that is neutral‚ in other words there are enough NaOH mmol to neutralize the HCl mmol present; also‚ the solution contains only water and NaCl the salt derived from the titration
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a) What other name(s) does this chemical go by? (i.e. synonyms) Other names for sodium bicarbonate are baking soda‚ sodium hydrogen carbonate‚ and carbonic acid sodium. (b) What is the type(s) of hazard associated with this chemical? (i.e. poisonous‚ biohazardous‚ ...) According to the Globally Harmonized System (GHS) of Classification and Labeling of Chemicals‚ sodium bicarbonate has not been categorized as hazardous. (c) What should you do if this chemical splashes in your eyes or is spilled
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Effects of Citric Acid on the Viscoelasticity of Cornstarch Pastes MADOKA HIRASHIMA‚ RHEO TAKAHASHI‚ AND KATSUYOSHI NISHINARI* Department of Food and Human Health Sciences‚ Graduate School of Human Life Science‚ Osaka City University‚ Sumiyoshi‚ Osaka 558-8585‚ Japan The effects of citric acid on the rheological properties of cornstarch pastes were studied by steady shear and dynamic oscillatory viscoelasticity‚ intrinsic viscosity measurements and microscopic observation. The pH of cornstarch
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[pic] |THE MECHANISM FOR THE ACID CATALYSED HYDROLYSIS OF ESTERS | | | |This page looks in detail at the mechanism for the hydrolysis of esters in the presence of a dilute acid | |(such as hydrochloric acid or sulphuric acid) acting as the catalyst. It uses ethyl ethanoate as a typical| |ester.
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