tablets‚ having croscarmellose sodium‚ remained dry and hard. Increased in concentrations of the crospovidone were found to decrease the disintegration time. The reason may be the highly porous structure of crospovidone‚ allowing it to draw large amounts of water‚ by a water wicking mechanism‚ into the porous network of the tablet. Due to this‚ though‚ crospovidone swells little‚ yet it rapidly absorbs water into its network. In batches where croscarmellose sodium was used as a superdisintegrants
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the newly formed copper ions had bonded with water molecules producing a transparent blue solution. Stage 2 Precipitation of Copper Hydroxide NaOH solution description Clear transparent aqueous liquid with a similar viscosity to water Notes and observations on the reaction The mixture became gelatinous and the beaker began warming as we added the Sodium
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Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers‚ it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic[1] fiber. Rayon Fiber Characteristics o Highly absorbent o Soft and comfortable o Easy to dye o Drapes well Some Major Rayon Fiber Uses • Apparel: Accessories‚ blouses‚ dresses‚ jackets‚ lingerie‚ linings‚ millinery‚ slacks‚ sportshirts‚ sportswear‚ suits
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solution to produce water and salt this activity is called titration. It involves carefully adding one solution to another until chemically equivalent amounts react. Vinegar is a solution of a weak acid in water. This acid will react with the base sodium hydroxide in a 1:1 molar ratio. If a solution of NaOH of known concentration will used titrate vinegar‚ it is possible to determine the amount of acetic acid. The main three things from this experiment are: to determine the concentration of vinegar‚ to
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weak alkali‚ aqueous sodium hydroxide‚ and heated it under reflux to produce sodium 2-hydroxybenzoate. I then converted this into 2-hydroxybenzoic acid by adding hydrochloric acid. Technically‚ hydrolysis is a reaction with water‚ however‚ the exact thing happens when acids/alkalis hydrolyse esters‚ the reaction is just quicker as the acid/alkali acts as a catalyst. To hydrolyse the methyl-2-hydroxybenzoate it is heated under reflux with the dilute alkali sodium hydroxide. First we hydrolyse
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inside the container. Once the reaction has reached completion‚ the process will be repeated. (Tissue) However in this lab the solution will be monitored with a digital pH meter. A pH meter uses circuitry to determine the concentration of the hydroxide ions in the solution and then converts that to a pH that can be read from a computer. In this lab the pH meter will be hooked up with Vernier’s Logger Pro to collect large amounts of data and easily visualize the titration curve. This
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name of the acids and bases from given formula Q-1-1: Name the following base: NaOH Q-1-2: Name the following acid: HCN Concept 2: Write the formula form given name of acids and bases Q-2-1: Write the formula for the following acid: lithium hydroxide Q-2-2: Write the name for the following base: hydrobromic acid Concept 3: Distinguish between acid‚ base‚ neutral compounds based on their properties which can be tested in a lab setting. Q-3-1: If a solution is slippery to the touch is it an
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CHEMICAL ENGINEERING DEPARTMENT COLLEGE OF ENGINEERING XAVIER UNIVERSITY – ATENEO DE CAGAYAN CAGAYAN DE ORO CITY GAS ABSORPTION COLUMN - MASS TRANSFER EXPERIMENT B ChE 35 Chemical Engineering Laboratory II Acabo‚ Dean Cris Aguirre‚ Ian Carlo Belarmino‚ Arniel Catan‚ Charles John Engr. Marco Theodore E. Escaňo ChE 35 Instructor October 2012 OBJECTIVE: To calculate rate of absorption of carbon dioxide into water from analysis of liquid solutions flowing down the absorption column
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SOAPS AND DETERGENTS _DISCUSSION_ The goal of this project was to make‚ and test four soaps‚ and two detergents. The purpose of making four different soaps and two detergents was needed in order to decide which one would be best for the environmental group to use in the future that would allow for the safest cleanup of an oil spill while not harming the animals or the environment in the process. It was necessary to test the impact of the four soaps and two detergents by analyzing their different
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EXPERIMENT 4 LAB REPORT TITLE: PREPARATION OF CYCLOHEXENE FROM CYCLOHEXANOL Paula Kata Partners: Ilai Bula S11099863 Eremasi Matin Abstract This work looks at preparation of cyclohexene from cyclohexanol which involves as part of an elimination reaction. The required reagent of concentrated sulfuric acid as one of the catalyst and water which allow the mixing known as washing the cyclohexene with water
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