Electrolytic Conduction Introduction Electrical conductors can be classified into two types: (1) electronic conductors and (2) electrolytic conductors. Solid and molten metals‚ semiconductors‚ and some salts are examples of electronic conductors. Conduction takes place in electronic conductors by direct migration of electrons through the conductor under the influence of an applied potential. Here the atoms or ions that compose the conductor remain stationary (except for vibrations about
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session was 3.55). We then proceeded by adding 25 mL of 0.5 M of HCl. The pH values after this addition are 1.56 and 1.34. We filled a cleansed biuret with 0.5 M NaOH solution. The main process begins with us closely monitoring changes in pH as we added NaOH from the biuret at 0.5 mL increments. We refilled the biuret with NaOH when it neared empty. We halted the titration process when both the pH stabilized and we reached a pH level range of 12-13. All data collected was graphed to visually
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Trial 3 * * Initial volume of NaOH in the buret * 20 20 35 35 30 30 Volume of HCI in the flask 38 38 26 26 30 30 Volume of NaHO remaining at the end point 50 50 50 50 Part II Trial 1 Trial 2 Trial 3 50 50 Initial volume of NaOH in the buret 30 30 25 25 20 20 0.70 0.70
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of the last three solutions that I found the name of. H2SO4 is a strong base‚ and a PH test revealed that it had a very low PH of 1. Also already knowing that solution 6 was NaHCO3 and solution 8 was Na2CO3‚ I was also able to confirm solution 2 was NaOH by the following reactions: H2SO4(aq) + 2 NaHCO3(aq) ⇒ Na2SO4(aq) + 2 CO2(g) + 2 H2O(l) H2SO4(aq) + Na2CO3(aq) ⇒ Na2SO4(aq) + CO2(g) + H2O(l) These reactions show that the fizzing that occurred while performing precipitate reactions was the release
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Mrs Trennor Research Assignment: The Chloralkali Industry The chloralkali process is responsible for the production of chlorine gas (Cl2)‚ sodium hydroxide (NaOH) hence the name chloralkali. The process is also responsible for the production of hydrogen gas (H2). These three substances are used to make products that are essential to people’s lives. The chloralkali process does have environmental impacts; however
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process was compared. Acetylsalicylic acid is produced when salicylic acid and acetic anhydride react in the presence of H2SO4. Consequently‚ the said reaction produces acetylsalicylic acid and acetic acid. In part one of the lab‚ titration of a NaOH solution with an indicator and a known concentration into a solution containing
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Hydrogen peroxide. Catalase‚ isolated from potatoes‚ speeds up the breakdown of hydrogen peroxide into oxygen and water. Materials Catalase isolated from potatoes Wax pencil Metric ruler 3 Test Tubes Test tube rack Distilled Water HCl solution NaOH solution pH paper Hydrogen Peroxide
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them to respire for about fifteen minutes. After fifteen minutes remove the organisms from the beakers and return them to their original bowls. Add four drops of phenolphthalein to each beaker. Obtain a burette and add NaOH drop by drop. Mix the contents thoroughly. Record amount of NaOh in millimeters on the table. How much phenolphthalein was required to make the
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| | | Materials: 7 pieces of liver (room temperature) | 1 piece of liver(frozen) | 3 clean test tubes(for each experiment) | Hydrogen Peroxide(2mL) | Hot plate | Beaker | Graduated Cylinder | HCI(2mL) | NaOH(2mL) | Goggles | Lab coats | Stirring rod | Plastic Spoon | Mortar &Pestle | | | | | | | | | | | | | | | | | | |
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transparent‚ low viscosity Test tube felt warm Dark red solid appears as steel wool disappears Solution in test tube turns greenish blue (still transparent‚ low viscosity) 5 Add sodium hydroxide (NaOH) to test tube from change 4 NEXT‚ add hydrochloric acid (HCl) Test tube has greenish blue‚ transparent‚ liquid NaOH – liquid‚ transparent‚ colourless‚ low viscosity‚ odourless HCl – liquid‚ transparent‚ colourless‚
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