through the addition of hydrobromic acid (HBr) and hydrogen peroxide (H2O2). This experiment was a greener bromination of stilbene because bromine was generated in situ and ethanol was used as the solvent. The melting point (243.30°C)‚ mass (.427g)‚ and percent yield (45.54) of the crystals were recorded. The FTIR was used to confirm that the product was produced. The peaks on the HNMR revealed the presence of aliphatic and aromatic hydrogens and were used to verify the identity of the product
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catalyst will the speed of a reaction always continue to increase? Explain your answer. It will continue to speed up the reaction until there is more catalyst than the limiting reactant. 3. In this lab you will produce oxygen and water from hydrogen peroxide (H2O2). Write a balanced reaction equation for this reaction. 2H2O2(l)------>2H2O(l)+O2(g) 4. What causes the bubbles to form in this reaction? The production of oxygen (O2) 5. The exhaust gas from car engines pass through catalytic converters
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then the gas is oxygen. When hydrogen is being tested‚ a burning splint will be used and when the splint is placed in to the mystery gas and a “pop” sound occurs‚ then the gas is hydrogen. When carbon dioxide is being tested‚ limewater will be added to the gas (produced by combining hydrochloric acid and sodium bicarbonate)‚ if the limewater turns cloudy or turns milky then the gas is carbon dioxide. Question What is the effect of different reactants on
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Surpassing the optimum temperature will result in a drop in enzyme activity. Materials: 6% hydrogen peroxide Liver suspension 10 test tubes 4 beakers Thermometers Measuring cylinders Test tube pegs Test tube rack Bunsen burner Tripod Gauze mat Ice cubes/refrigerated water Ruler Safety goggles Pipettes Method: 1. Set up equipment as follows: Beaker Temperature (˚C) 6% Hydrogen peroxide (mL) Liver suspension (mL) 1 10 3 2 10 3 3 10 3 4 37 10 3 5 50 10
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The effect of time on enzyme reaction. Abstract: In this lab investigation we will observe how the amount of hydrogen peroxide is affected by catalase over time. The enzyme was added to 10 mL’s of hydrogen peroxide and observed over time to determine the relation between time and enzyme activity. The hypothesis stated that as time increased substrate would decrease. Therefore I predicted that at 60 seconds‚ there would be the least amount of H2O2. The enzyme activity mirrored my predictions
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An investigation to see how much oxygen is given off when different concentrations of catalase are added with hydrogen peroxide. Aim: To see if changing the concentration of catalase (found in celery) with hydrogen peroxide affects the amount of oxygen given of. Background Information: (Hydrogen peroxide - H2O2 1/2O2+H2O) Enzymes: Hundreds of chemical reactions happen simultaneously inside living cells and it’s the job of enzymes to control and regulate the various metabolic
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Investigating the effect of changing substrate concentration on the activity of the enzyme catalase The aim of this experiment is to examine how the concentration of a substrate (hydrogen peroxide) affects the rate of reaction of an enzyme catalyse (found in liver cells) Research Question: how does changing the concentration of the substrate affect the rate of reaction of the enzyme catalyse? Hypothesis: As the concentration of the substrate increases‚ so does the rate of reaction until the reaction
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FHSB1214 Unit description Biology I Year and trimester of study 2015‚ Trimester 1 Title of lab report Investigation of the Effects of Different Catalytic Conditions on Hydrogen Peroxide Decomposition. Lecturer’s name Norkhalidah Binti Jamali Investigation of the Enzymatic Effects of Different Catalytic Conditions on Hydrogen Peroxide Decomposition Comments are indicated by ‘>>>’ (in detail)‚ ‘???’ (unclear) or ‘xxx’ (wrong concept) FHSB1214 Biology I (201505)-Lab Report Marking Scheme (Practical
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from the optimum pH (7.2)‚ the lower the reaction rate. At a pH of 7.2‚ the foam of the reaction measures 6cm. At a ph of 3 it measures 2.5 cm‚ at a pH of 5 it measures 2.75 cm‚ at ph 9 it measures 2.3 and at 11cm it measures 2cm. pH measures the hydrogen ion concentration of a substrate. By changing the pH of the catalase‚ the enzyme was denatured. Denaturing is the result of altering the characteristics or properties of an enzyme by temperature‚ pH level‚ or substrate concentrate. As the optimal
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solutions created a new color because the two solutions were originally colorless. There was no gas formed. Part B: (Testing the Anions) Iodide reaction with hydrogen peroxide observations- The precipitate at the bottom turned into a red solid and the liquid solution was a dirty yellow color. Nitrate reaction with hydrogen peroxide observations- A colorless precipitate formed at the bottom and looked like a bubble. It was a relatively large bubble. The liquid solution was colorless and cloudy/fizzy
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