How is pH affecting catalase activity? Hypothesis The catalase activity is assumed to be the most active in pH7. The higher or lower concentration away from the optimum pH of catalase‚ the slower the rate of activity is. Data Collection & Processing I collected the results of pH4‚ pH7‚ pH10 and pH13 after 2 minutes‚ and I repeated the experiment 3 times. Below is a table to show the results‚ their averages and standard deviations: | 1st time (sec) | 2nd time (sec) | 3rd time (sec)
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2.5 10-5 M 4.9 10-5 M 7.0 10-3 M 3.7 10-2 M 5. What is the pH of the buffer that results when 12.5 g of NaH2PO4 and 22.0 g Na2HPO4 are mixed and diluted with water to 0.500 L? (The acid dissociation constants for phosphoric acid are Ka1 = 7.5 10-3‚ Ka2 = 6.2 10-8‚ and Ka3 = 3.6 10-13) (Points : 10) 2.30 7.04 7.38 12.27 12.62 6. Which of the following combinations would be the best to buffer an aqueous
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environments affecting the rate of reaction‚ PNPP (p-nitrophenyl phosphate) + H20 ? PNP (p-nitrophenol) + H3P04. This reaction is catalyzed by the enzyme phosphatase. Different environments produced different reaction rates as environmental factors affect the efficiency of phosphatase. This is because environmental factors can change the tertiary structure of phosphatase‚ which alters its active site‚ and thus changes its efficiency to catalyze the reaction. We measured the rate of reaction‚ by using
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October 21‚ 2013 Designing an Experiment to Investigate Factors Affecting Rate of Reaction Introduction Hydrogen Peroxide (H2O2)‚ is the most simple peroxide and commonly used in several household items such as toothpaste or as an alternative to bleach. However hydrogen peroxide it is a very dangerous substance when accumulated in large amounts. If that situation occurs this substance must be decomposed. But how can we decompose this reaction? Well it decomposes by itself very slowly (2H2O2(aq) ->
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Core 2: Factors Affecting Performance Part 1: Review the selected sport-related scene. Describe and ascertain which psychological factors are impacting on the athlete’s performance. The major aspects of psychology that affect performance are motivation and anxiety. Athletes need to be able to prepare for major competitions‚ reduce tension and stress that may cause a decline in performance‚ and maintain high-level performances over a long period of time. The ability of the mind to generate thought
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Assessment on factors affecting voting behaviour being more important than others in the UK. By Maryam Ishaq The UK is a largely populated place with many people who are opinionated in politics‚ so‚ voting is important to many people as they get their say in who should run the country‚ however‚ many factors influence and affect the voting behaviour of the UK voting participates. The following essay intends to discuss what factors‚ affecting voting behaviour‚ is more important that the others.
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Concentration vs Rate of reaction Brandon Introduction A reaction rate is the speed at which a chemical reaction will occur. Heat‚ concentration of a chemical‚ Surface area or a catalyst‚ will affect the rate of reaction. The concentration of a chemical will speed up of the reaction because the reactant particles have become more crowded therefore increasing the chance of productive collisions. In this practical the chemicals will be Sodium thiosulphate and Hydrochloric acid which will produce
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Factors affecting the stability financial system Stability of financial system : Introduction : financial stability can be defined as a condition in which the financial system – comprising of financial intermediaries‚ markets and market in structures – is capabilities with understanding shocks ‚there by reducing the likelihood of disruptions in the financial intermediation process which are severe enough to significantly impair the allocation of savings to profitable investment opportunities.
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Factors Affecting Housing Market Financing - Most consumers have to borrow from a lender in order to afford the purchase of a home. When banks get stricter on loan approvals‚ fewer houses get purchased. If loans are being approved rapidly and more people can afford to by the homes‚ the home‚ supply will decrease‚ allowing owners the choice to increase the price. Supply and Demand - Supply and demand impacts prices in any industry. If more consumers want a good than there are of those goods
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quantitative relationship between the amount of reactants and products of a reaction ( that is how many moles of A react with a given mol of B). A known starting mass of magnesium and the measured collection of hydrogen gas will be used to determine the reaction stoichiometry and the valency of magnesium Introduction Stoichiometry is the study of the quantitative relationship between amounts of reactants and products of a reaction. Stoichiometry can be used to calculate the amount of a product formed
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