SINGAPORE POLYTECHNIC SCHOOL OF CHEMICAL & LIFE SCIENCES CP 4001: ANALYTICAL & PHYSICAL CHEMISTRY Experiment 4: Gravimetric Analysis Prepared for: Mr Goh Tong Hng Submitted by: Ng Hui Shan (0900931) DBS/FT/1A/02 26th May 2009 CONTENTS 1. Synopsis 3 2. Objectives 4 3. Theory 1. Experimental Procedure 4 2. Stoichiometric Calculation 7 4. Procedure 7 5. Results & calculations 1. Amount of
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Indirect determination of ∆H via Hess’s law Conclusion & Evaluation Research question: What is the ∆H/mol of hydration of CuSO4 (anh)? The ∆H/mol of hydration of CuSO4 (anh) is -70.2‚ according to the experiment done in class. It was determined by applying the Hess’s law‚ using two reactions 1) CuSO4-5H2O ----> CuSO4 (aq) + 5H2O 2) CuSO4 (anh) -----> CuSO4 (aq) According to the Hess’s Law‚ which states that the total enthalpy change for a chemical reaction is the same disregarding
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Gravimetric Analysis Report Aim: Determine the % by mass composition of a sand-salt mixture. Background: Gravimetric analysis is a method which is based on the isolation of the desired sample in pure forms or in some combined form from a sample‚ and weighing the isolated constituent. Then from the weights of the sample or precipitate‚ a percentage can be calculated out of the constituent. Solubility is the amount of a substance which is called the solute‚ dissolves in a volume of liquid substance
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Gravimetric Analysis CHEM 200-03 Fall Semester 2012 September 19‚ 2012 Jeff Marasigan Abstract Gravimetric analysis is based on the quantitative isolation of the desired constituent the analyte of interest from the sample in highly pure form or in some combined form and weighing the isolated constituent. The desired constituent is usually isolated or separated by precipitation. From the weights of sample and precipitate‚ the percentage of the constituent in the original sample can
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GRAVIMETRIC ANALYSIS Methods in GA Precipitation Method - involves isolation of an ion in solution by a precipitation reaction‚ filtering‚ washing the precipitate free of contaminants‚ conversion of the precipitate to a product of known composition‚ and finally weighing the precipitate and determining its mass by difference. From the mass and known composition of the precipitate‚ the amount of the original ion can be determined. Volatilization Method -the analyte or its decomposition products
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0 results (0.37 seconds) Scholarly articles for rural and urban settlements differences … intolerance in Asian Indians: urban-rural difference … - Ramachandran - Cited by 289 Ecosystem structure and function along urban-rural … - McDonnell - Cited by 726 … wage differentials between urban residents and rural … - Meng - Cited by 329 Search Results Difference between Urban and Rural www.differencebetween.info/difference-between-urban-and-rural Dec 16‚ 2013 - Human settlement areas are
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SynopsisThe objective is to determine the amount of Sulphate in anhydrous Barium Sulphate precipitate by gravimetric method. Gravimetric method is by the quantitative determination of the mass of anhydrous Barium Sulphate precipitate. Barium sulphate precipitate is form when Barium Chloride is added excessively to a hot given Sulphate solution slightly acidified with concentrated Hydrochloride acid. The white precipitate of hydrate Barium Sulphate formed is than digest‚ filtered out‚ washed and dried
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DIRECT AND INDIRECT In this section‚ We are going to see How the conversion of Direct to Indirect Speech and Indirect to Direct Speech is done? We may report the words of a speaker in two ways. 1. Direct Speech We may quote the actual words of the speaker as it is. This method is called Direct Speech. 2. Indirect Speech We may report what he said without quoting his exact words. This method is called Indirect Speech or Reported Speech. Example: • Direct: Clinton said‚ “I am very busy now
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cash flow statement using the direct or indirect method‚ and both methods report net cash flow from operating activities. Direct/Indirect Cash Flow The main difference between the direct method and the indirect method involves the cash flows from operating activities‚ the first section of the statement of cash flows. Direct Method‚ the cash flows from operating activities will include the amounts (cash from customers‚ and cash paid to suppliers). Indirect shows net income followed by adjustment’s
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GUIDANCE NOTE WHAT IS INDIRECT DISCRIMINATION? Most people understand direct discrimination. Indirect discrimination occurs where the effect of certain requirements‚ conditions or practices imposed by an employer or education provider has an adverse impact disproportionately on one group or other. Indirect discrimination generally occurs when a rule or condition‚ which is applied equally to everyone‚ can be met by a considerably smaller proportion of people from a particular group‚ the rule
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