INVESTIGATION 12.A Target Skills Determining the reactivity of various metals Testing Relative Oxidizing and Reducing Strengths of Metal Atoms and Ions By observing whether reactions occur between solid metals and metal ions in solution‚ you can determine the order of oxidizing and reducing agents according to strength. Question How can the presence or absence of a reaction provide information about the relative strength of oxidizing and reducing agents? Safety Precautions
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Assignment: 1 Subject: Physical Chemistry Submitted By: Group Leader: Mauzzmah Shahid 17 Group Members: Asma Fatima: 18 Muhammad Rizwan: 19 Nida Altaf: 20 Muhammad Aareeb: 21 Rohma Kanwal: 23
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class measured the pressure in the test tube during the reaction of the substance with‚ 1.5 ml of H2O2‚ 1.5ml of H2O and different amounts of enzyme drops‚ to determine how much oxygen gas is produced during the reaction since the pressure of the test tube will get higher as more oxygen gas is accumulated during the reaction. 2) If more drops of the enzyme are added to the substance with‚ 1.5 mL of H2O2 and 1.5mL of H2O‚ the reaction will accumulate more oxygen gas which will lead to an increase
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temperature and pH on the action of this enzyme. The substrate of the enzyme will be 3% hydrogen peroxide (H2O2). Catalase works by the following mechanism: 2 H2O2 ------------------>____2 H2O+ O2 Materials: • 1M HCl • 6 test tubes • hot water bath • graduated cylinder • 1M • • NaOH • test tube rack • ice bath • 100 ml beaker • H2O2 • test tube holder Safety: HCl and NaOH are strong acids and bases. If you spill these chemicals on your
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Gloves Materials: Liver pureed 3% of hydrogen peroxide (H2O2) with few drops of detergent Safety: Hydrogen peroxide is corrosive therefore you should wear gloves and safety goggles when handling it Table of Variables Dependent Independent Controlled Amount of bubbles produced pH of substrate Amount of liver (pureed) Temperature (37 degrees celcius) Amount of detergent concentration of H2O2 Method: Part 1 – setting up control 1. Add 3mL
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soaked disks. They used 3% H2O2 with a pH of 3 and then ran experiment they recorded their data in Table 3. d. Then they repeated the experiment using 3% H2O2 with a pH of 5 and recorded the results in Table 3 e. Then they repeated the experiment using 3% H2O2 with a pH of 7 and recorded the results in Table 3 f. Then they repeated the experiment using 3% H2O2 with a pH of 9 and recorded the results in Table 3 g. Then they repeated the experiment using 3% H2O2 with a pH of 11 and recorded
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BRIGGS RAUSCHER OSCILLATING CLOCK COURSEWORK Aim: To investigate the effect of temperature on the rate of reaction. To investigate the order of reaction with respect to hydrogen peroxide and ethanoic acid (acetic acid) by the use of an oscillating clock reaction. To determine the activation enthalpy with and without catalytic ions and use this to compare the effectiveness. To investigate the rate equation‚ rate constant and possible mechanism for this reaction. Background research: The Briggs-Rauscher
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pencil or white-out will render the work ineligible for mark appeal) 1. What observations and conclusions can you note about each of the three reactions that occurred in the test tubes where you combined potassium iodide‚ KI‚ and hydrogen peroxide‚ H2O2 (in part 1) of the experiment? (Give a detailed explanation of any observations that you made‚ i.e.‚ what made the colour change‚ what reactions happened?) ANSWER: 2. Use the information below to develop the necessary calculations for the rate
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Effects of Temperature‚ pH‚ Boiling‚ and Hydroxylamine on the Enzyme Peroxidase Extracted From Brassica rapa Abstract In this experiment the enzyme peroxidase was extracted from from a turnip‚ Brassica rapa‚ and tested under different conditions. The effects of temperature‚ boiling‚ pH‚ and a competitive inhibitor were tested. The enzyme was tested at temperatures of 4°C‚ 24°C‚ 32°C‚ and 48°C. As the temperature increased‚ so did the activity of the enzyme
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Ltd.‚ Gifu‚ Japan) following a described technique.20 Considering the evaluation results of H2O2 concentrations as shown in Figures 6 and 7‚ a plasma jet with an inclined style of treatment was conducted once daily for 2 minutes over 14 days. The position of the wound surface was about 15 mm from the nozzle tip with a defined slope (45o in gradient)
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