University of Santo Tomas España‚ Manila Abstract Soda ash is the common name for sodium carbonate (NaCO3)‚ a chemical salt derived from carbonic acid. It is frequently used in manufacturing‚ industry‚ and in domestic chores. Glass production is one of the primary industrial uses for sodium carbonate. It is also used as an additive for detergents‚ and it can also be used in cooking as a food additive. Sodium carbonate is a natural water softener‚ as it prevents hard water from obstructing the
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[PARVATIBAI CHOWGULE COLLEGE(H.S.S)-MARGAO-GOA] Chemistry chart Std-XII Name______________________________________________ Class____________________________________ Div__________________ Roll No___________ Batch No_______ 1 [PARVATIBAI CHOWGULE COLLEGE(H.S.S)-MARGAO-GOA] Chemistry chart Std-XII VOLUMETRIC ANALYSIS REDOX TITRATIONS Experiment No:- 1 Date:--------------- Aim:- You are provided with two solutions as follows. Container A: -----------------M/N Stock Solution of Hydrated
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Soda ash is the common name for sodium carbonate‚ a chemical compound frequently used in manufacturing‚ industry‚ and even around the house. Glass production is one of the primary uses for sodium carbonate. Detergents and cleaning agents may also make use of it‚ and it can be used in cooking or as a food additive‚ as well. Sodium carbonate is known by the chemical formula Na2CO3‚ in reference to the elements that make up its base composition: Na‚ which is sodium; C‚ which is carbon; and O‚ which
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Discussion Field observations and lab analysis indicated that‚ there are many types of damages that wall painting can undergo in the Komir temple. All building and decoration materials of Komir temple have been investigated concerning the contamination with soluble salts. Soluble salts represent one of the most important causes of stone decay that may precipitate on the external surface (“efflorescence’s”) or in proximity of the surface (“subefflorescence’s”) [Brai et al 2010]. The degradation induced
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acid in vinegar by titration with a standardized sodium hydroxide solution. The experiment is divided into two parts where the first one is to prepare standardizing sodium hydroxide solution which will be titrated to potassium hydrogen phthalate‚ solution and the second one is determining the molarity and percentage by mass of the acetic acid in vinegar. 6 g of NaOH solid is used to dilute with distilled water to prepare a 250 mL of 0.6M sodium hydroxide. pH electrode will be immersed into the
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Chemistry in Photography Background A photograph is an image made by a photo-chemical reaction which records the impression of light on a surface coated with silver atoms. The reaction is possible due to the light-sensitive properties of silver halide crystals. Equation form for silver halides: Ag + + e - Ag Species produced include: Ag2+‚ Ag2o‚ Ag3+‚ Ag3o‚ Ag4+‚ Ag4o In 1556‚ the alchemist Fabricius was the first to discover that light can photochemically react with these crystals to
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II.Purpose: The purpose of this experiment is to standardize a sodium hydroxide solution and use the standard solution to titrate an unknown solid acid. The equivalent mass of the solid acid will be determined from the volume of sodium hydroxide added at the equivalence point. The equilibrium constant‚ Ks‚ of the solid acid will be calculated from the titration curve obtained by plotting the pH of the solution versus the volume of sodium hydroxide added. III.Background Information: Volumetric analysis
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Redox Titration Analysis of a Commercial Bleach A. Purpose ! ! ! To review oxidation-reduction reactions and their stoichiometry. To learn the concept and technique of redox titration. To determine the percent (m/v) of an active ingredient‚ sodium hypochlorite (NaOCl)‚ in a commercial bleaching agent. B. Theoretical Background Whereas acid-base reactions involve the transfer of a proton‚ oxidation-reduction or redox reactions involve the transfer of electrons from one substance to another
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Ordinary Level 2 INSTRUCTIONS TO SUPERVISORS For Question 1 Candidates will require the following. (a) Approximately 2.0 mol/dm3 hydrochloric acid (HCl)‚ labelled P. Allow each candidate approximately 200 cm3. (b) Approximately 2.0 mol/dm3 sodium hydroxide (80 g/dm3 NaOH)‚ labelled Q. Allow each
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silica gel desiccator‚ molecular seives and reagent dispenser attached to it. 2. Perform neutralization to remove any traces of water using KF reagent. 3. Add approximately 100mg of Di-sodium tartrate dihydrate in the kettle and perform titrations by method no. 47 of the auto-titrator. This is called standardization to find the strength of the reagent. 4. Add known amount of sample glycerol (approx 60μl) to the kettle and again perform titration using method no. 2 of the auto-titrator. We get the
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