"Catalysis" Essays and Research Papers

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Catalysis

HETEROGENEOUS CATALYSIS D. C. AGUILAR AND B. N. SANCHEZ INSTITUTE OF CHEMISTRY, COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES, DILIMAN QUEZON CITY, PHILIPPINES RECEIVED MARCH 17, 2008 ABSTRACT Catalysis which involves the use of a catalyst in a different phase from the reactants is known as heterogeneous catalysis. Catalysts are known to enhance rates of reaction without being consumed and they also reduce activation energies. The hydrogen peroxide decomposition reaction catalyzed...

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Enzyme Catalysis

Enzyme Catalysis Abstract: Catalysis is an enzyme that decomposes hydrogen peroxide into oxygen and water. In this lab we will conduct a series of experiments to determine the affects of; pH, temperature, and concentration change on such catalysis. After completing the experiments we determined that catalase works most efficiently when in a 27°c, 50% (5 ml of catalase – 5ml of water), and a normal body pH of 7°. By: Patrick Jawien Course Code: SBI 4U Performance Date: 25 September 2012 ...

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Enzyme Catalysis Lab

Abstract: After reviewing the basics of enzymes and catalysis, we take a dive into the wonderful world of catalase. Beginning with establishing a base line of just how much hydrogen peroxide there is in 5.0mL of the reacted solution; to figuring out exactly how much actually reacted after 300 seconds of catalyzed reaction. Follow the experiment from the beginning steps right to the end as you see where the students went wrong, interpretation of the results, and great answers to work sheet...

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Enzyme Catalysis

Enzyme kinetics (catalase/kmno4) Enzyme catalysis Farah Mohamed galal 22-3014 t09 Introduction: E + S → ES → E + P Enzymes are proteins which act as a catalyst in biochemical reactions(affect the rate of achemical reaction). The substrate binds to the active site of the enzyme. Any deformation of the active site will affect the activity of the enzyme, these are some ways that enzyme action may be affected because of them: 1- Salt concentration: If it is close to zero or very high...

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Enzyme Catalysis Lab Report

Candace S. Randolph MISEP Cohort 2 Chemistry 512 Enzyme Catalysis Lab 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...

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Effects of Enzyme Catalysis of H2O2 by Catalase

Effects of Enzyme Catalysis of H2O2 by Catalase Report by: Timmy Lin (#269164729) October 17, 2011 Mr. Rienzi AP Biology Problem: Measuring the effects of Catalase enzymes on hydrogen peroxide decomposition. Measuring the rate of the reaction when hydrogen peroxide and Catalase are mixed at the same ratio for different time (10, 20 30 60 120 180 360 seconds). Background: Enzymes are biological catalysts that carry out cellular metabolic processes with the ability to enhance the rate...

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ap bio Enzyme Catalysis

Enzyme Catalysis Introduction: Enzymes are produced by living organisms as proteins. These enzymes perform as catalysts to bring about a chemical reaction. In fact, most reactions are catalyzed by enzymes during reactions in the cell or in the human body. A catalyst that enzymes pose ad are by definition substances that are capable of initiating or speeding up a chemical reaction. Catalyst are not a necessity during a chemical reaction, they are just used to speed up a chemical reaction. This...

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Catalysis

Catalysis: Midterm Review LECTURE 1: Sept 6th 2012 What is catalysis, Importance of catalysis, Industrial relevance, presentation of the course What is Catalysis: Catalyst: * catalyst is substance that increases the rate at which a chemical reaction approaches equilibrium, but is not consumed in the process * not reagent or product; noted above equation arrow * participates in kinetic equations, but not in eq constant Catalytic Cycle: * succession of chemical changes...

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Organic Chemistry

Microwaves in organic synthesis Homogeneous Catalysis Hydroformulation (Reductive amination) Methanol carbonylation Alkene oligomerization Propene polymerization (Ziegler-Natta) Hydrocyanation of alkenes Carbonylation of alkenes Alkene metathesis C-H functionalization Epoxidation reactions Hydrogenations Palladium-catalyzed cross couplings in organic synthesis Heck Suzuki Negishi Metathesis of oefins Types of Heterogeneous Catalysis Metals and Alloys – Hydrogenation – Catalytic...

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“The Effect of pH levels on Reaction Rates”

Abstract The catalysis of enzymes within our bodies is essential for human survival and when this ability is impaired by the presence of Hydrogen ions, our cells cannot function properly. This experiment was conducted to determine if the reaction rate changes in response to a variation of acidic, neutral, and basic solutions. The experimental results indicated that the basic/high pH solution has a faster rate of reaction in the solution. Introduction Enzymes are proteins that catalyze...

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