6.05 Rate and Collision Theory Does surface area affect dissolving of Alka-Seltzer tablets? Materials: 1. solo cups 2. Alka-Seltzer tablets 3. Timer 4. Measuring Cup 5. Thermometer Procedures: 1. I placed out two of my solo cups on the counter 2. Then I put 1 cup of room temperature water into each cup. 3. Then put one Alka-Seltzer Tablet in one cup and time it until it dissolves completely. 4. In the second cup I put in a crushed up Alka- Seltzer tablet and timed it until it
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Report Pre-lab Questions: 1. Write a balanced chemical equation with state symbols for the reaction catalyzed by peroxidase. 2H2O2 2H2O + O2 (4H1 4O) (4H + 2O + 2O) 2. What is the substrate(s) of this reaction? What is the catalyst? Substrate = H2O2 hydrogen peroxide Catalyst = peroxide 3. At what approximate temperature do enzymes normally operate in the body of a warm-blooded animal? Would your answer change if the enzyme came from a plant or yeast? Enzymes normally operate in the body of a warm-blooded
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be speeded by adding some MnO2 catalyst. Metal chlorate Metal chloride + oxygen In this experiment a weighed quantity of potassium chlorate is heated. The oxygen formed in the reaction is driven off and the mass of the residue (KCl) is measured. These two quantities‚ the mass of the original sample of potassium chlorate and the mass of the KCl‚ allow us to determine the amount of oxygen in the original sample. If a catalyst is used‚ it will remain unaffected
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of the catalyst by adding high sodium‚ low sodium‚ and very low sodium into three individual test tubes ‚ and measured the height of the foam then low sodium would have the highest reaction rate‚ this is because changes in the concentration of salt alter the electrostatic interactions between charged amino acids‚ so if salt is added the ability of enzymes to bind to the substrate is altered and the enzyme may or may not be able to bind to it. If I change the environment of the catalyst by adding
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Craig Manitoba Curriculum Chemistry Grade 12; Kinetics‚ Topic 3-08 Objectives To design short experiments to investigate and explain qualitatively using collision theory the relationship between reaction rate and temperature‚ concentration‚ catalyst‚ and surface area. Apparatus and Materials Available 3 x 250 mL beakers magnesium ribbon (1 cm) 3 x test tubes magnesium powder test tube rack mossy zinc 10 mL graduated cylinder copper turnings 3 x Alka Seltzer® tablets
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Step 2: Cl + O3 ClO + O2 ClO + O Cl + O2 (single "O" atoms occur naturally in the atmosphere.) a) Write the equation for the overall reaction. (Using steps 1 and 2) _________________________________________________________ b) What is the catalyst in this reaction? c) Identify an intermediate in this reaction _________________________________ _______________________________ d) Explain how a small amount of chlorofluorocarbons can destroy a large amount of ozone. _________________________________________________________
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Copper-Chromium-Cobalt catalyst) before entering the packed bed reactor. The reaction takes place in gaseous state. The reason for using a packed bed reactor is because it allows gaseous reactions‚ has higher conversion per weight of catalyst compared to other catalytic reactors and the reaction rate is dependent on the catalyst surface area instead of the volume of reactor‚ allowing it to take up less space without affecting the rate of reaction. In the reactor‚ the catalyst used is Copper‚ with
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The separatory funnel in the first extraction contains petroleum ether and 1-hexene in the organic layer and water and HBr in the aqueous layer. Between both layers‚ the catalyst‚ tetrabutylammonium bromide exists. Alkenes are immiscible with concentrated HBr and if the reaction is not mixed efficiently then the reaction is slow. HBr is a strong acid so it ionizes into H+ and Br – and protonates water into H3O+. H3O+ is a
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hydrochloric acid In the lab‚ zinc granules react fairly slowly with dilute hydrochloric acid‚ but much faster if the acid is concentrated. The catalytic decomposition of hydrogen peroxide Solid manganese(IV) oxide is often used as a catalyst in this reaction. Oxygen is given off much faster if the hydrogen peroxide is concentrated than if it is dilute. The reaction between sodium thiosulphate solution and hydrochloric acid This is a
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rare and is expensive and it is mostly used in chemical research. However‚ there are some uses like being a catalyst‚ helping with cancer therapy and dating the ages of meteorites. Also “stable lutetium can be used as catalysts in petroleum cracking in refineries and can also be used in alkylation‚ hydrogenation‚ and polymerization applications.” In other words it can be used as a catalyst in splitting molecules in refineries‚ it can be used to produce a chemical reaction between hydrogen and another
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