higher % of the solvent that the higher the colour intensity will be shown on the ph colour scale. The lower the solvent then the less colour shown. Materials: *Test Tubes (4) *Cork Borer *Beets *Water *1% Acetone *50% Acetone *1% Methanol *50% Methanol Procedure: *Cut 4 uniform cylinders of beet using a cork borer with a 5-mm inside diameter. Trim each cylinder to 15-mm in length. *Place these cylinders of beet tissues in a beaker and run tap water over then for 2 minutes to wash
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indicated that the drug was freely soluble in methanol‚ methylene chloride and insoluble in water‚ ether and slightly soluble in PBS (pH 7.4)‚ dichloromethane and very slightly soluble in chloroform‚ alcohol etc. Partition coefficient of the drug was found to be 5.057 in n-octanol: Phosphate buffer solution (pH 7.4) suggesting the drug to be lipophilic in nature. Standard curves of Ketoconazole were prepared in different fluids i.e. PBS (pH 7.4) and methanol. The R2 values are 0.9987‚ 0.9983 and a
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this served as a measurement of the boiling point. The average measured boiling point was 60.2°C. The measured data was inadequate to identify the liquid with. The unknown liquid was revealed to be methanol; the revealed identity could then be used to compare the data to the actual information for methanol. The molar mass was found to have a percent error of 55.6%‚ the density had a percent error of 68.1% and the boiling point had one of 6.95%. The measured data for the boiling point was fairly accurate
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Alcohols Aim The aim of this experiment is to investigate the combustion of various alcohols. The alcohols will be burnt to heat up a test tube of water‚ I aim is to find out how much energy is produced when burning the following alcohols: Methanol‚ Ethanol‚ Propanol‚ Butanol‚ and Pentanol. Any form of burning is an exothermic reaction (heat is given out)‚ this means that the reactants energy is higher than that of the product. Alcohols react with oxygen in the air to form water and
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SPU 27 Problem Set 7 Due in TF’s homework box before class on Thursday‚ October 31st You are encouraged to work in groups‚ but all submitted work must be your own. If you work with others‚ please note who they are. Please type or write your answers on a separate sheet of paper. Your work must be organized and legible – if your TF can′ t understand what you wrote‚ they won′ t give you credit. Show your work for derivations and calculations. Be sure to calculate all results fully (don′ t leave
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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 dispersion was adjusted between 6.0 and 3.0. The viscosity of the pastes was increased by lowering the pH (between 5.5 and 3.6)‚ while the viscosity of samples with pH below 3.5 decreased further than that of the control (pH ) 6.3). Citric acid promoted the collapse of starch granules; however
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Canada T6G 2W2 Dear Mr. Demirdal‚ Drilling mud is important in the petroleum industry. Drilling mud can be composed of various types of clay. All the clays have their unique properties and when prepared with water‚ they will exhibit different viscosity‚ gel strength‚ and most importantly‚ the rheological characteristic of the drilling mud. We are required to observe the difference between Bentonite‚ and Attapulgite clay in both salt water and fresh water. It was also required to differentiate the
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PEP Process Module 1 19 Aug 1999 SRI Consulting Process Summary This Aspen Plus model simulates the production of acetic acid by low pressure methanol carbonylation in the presence of a heterogeneous rhodium (Rh) catalyst and the promoter methyl iodide. It is intended to resemble the Chiyoda/UOP Acetica™ process‚ a novel heterogeneous methanol process for the production of acetic acid. This technology is based on a heterogeneous Rh catalyst in which the active Rh complex is chemically immobilized
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body. * To understand how to interpret a graph of blood Bessel radius versus blood flow rate. * To understand how blood viscosity affects blood flow rate. * To list the components in the blood that contribute to blood viscosity. * To explain conditions that might lead to viscosity changes in the blood. * To understand how to interpret a graph of viscosity versus blood flow. * To understand how blood vessel length affects blood flow rate. * To explain conditions that can lead
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denaturants act upon or denature protein differently. This was determined using the principle of viscometry. An Ostwald viscometer was used to measure the viscosity of the prepared native‚ blank‚ denatured native and blank with denaturant solutions. The time required for the said solutions to pass through the viscometer were recorded and their viscosities were then calculated using the data. Experimentally‚ urea was found to be the best out of the six denaturants that were used. Results and Discussion
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