Concentration on Reaction Rates and Pressure Background - While conducting the Enzyme Lab, students used enzymes as catalysts in order to speed up the reaction processes involved in several tests. Enzymes are substances produced by living organisms that act as a catalyst, while a catalyst is a substance that increases the rate of the chemical reaction. Furthermore, varying amounts of pH and enzymes were added to the mixture in order to determine the substance’s rate of reaction. When the…
Purpose To investigate the effect of temperature on the rate of the thiosulphate reaction. Hypothesis If the temperature increases, then the rate of the thiosulphate reaction will also increase. Variables Independent variable: Temperature change in each experiment, which will be varied by increasing the temperature by 10°C each time. Dependent Variable: Rate of reaction, which will be measured by measuring the time taken for the cross to not be visible. Constants: Concentration of HCl and…
I predict that the higher the temperature of the solution the faster the reaction will take place because the particles will collide more when the temperature rises. The aim of this experiment was to test if the temperature affects the rate of reaction between hypo and dilute hydrochloric acid? How does temperature affect the rate of reaction between hypo and dilute hydrochloric acid? The kinetic particle theory explains the properties of different states of matter. The particles in solids,…
resulting from reactions with chemicals in its environment. The oxygen oxidizes with the metal, and the sodium help speed up the corrosion process. The presence of oxygen and electrolytes (Sodium – Na) in sample number 2 make it more…
explore how different factors affect the reaction rate of enzymes reacting with their corresponding substrates in order to learn more about how enzymes function in different environments. The independent variables investigated in this experiment were the concentration of different substrates, the temperature of the environment, and the effect of a catalyst on the reaction rate. The dependent variable for all of the investigations was the time it took for the reaction to occur. To investigate…
EXSS 2025 Motor Control and Learning Experiment 4: Reaction, Movement& Response Time in Decision-Making Tasks I. Question 3: (i) Why are multiple repeated trials in each task required (ii) Why do we need to complete checks on the data (identify errors etc)? (iii) Why was there a variable fore-period between the start of a trial and the appearance of a stimulus in the tasks? (iv) Why was randomization necessary from Task 1b onwards? (v) Why was 80%(congruent) vs 20%(incongruent) split used in…
surface charge of both the dyes molecules and functional groups of adsorbent. More absorption capacity is well worked on 4 & 6 pH. As the pH is increases, however, the overall surface charge on the cells will become positive, which will promote reaction with Methyl Red as an anionic dye through electrostatic forces of attraction. At pH 2 ,the removal capacity is low due the structure of methyl red and iron particles. It has greater tendency to attract them and corroision starts…
point, a substantial amount of ester, alcohol, water and carboxylic acid was present in the round bottom flask. So to ensure a reasonable yield of the ester, an excess of the alcohols (2-pentanol, 2-butanol and benzyl alcohol) was used to drive the reaction faster. Acetic acid was used as the limiting reagent. The alcohol was used in excess. The researchers suggest removal of water via azeotropic…
7.59 From the stress–strain data for poly(methyl methacrylate) shown in Figure 7.24, determine the modulus of elasticity and tensile strength at room temperature [20°C (68°F)], and compare these values with those given in Tables 7.1 and 7.2. Solution From Figure 7.24, the elastic modulus is the slope in the elastic linear region of the 20C curve, which is The value range cited in Table 7.1 is 2.24 to 3.24 GPa (325,000 to 470,000 psi). Thus, the plotted value is a little on the…
Introduction Enzymes, which speed up a chemical reaction without being consumed or changing the products of the reaction, are very important because they control the cellular activity of all living organisms. Enzymes are also described as being “catalysts”. In biological systems, specific enzymes catalyze particular cellular reactions. Each enzyme has a unique 3-D shape, and this shape determines which reaction it catalyzes. However, in order for a chemical reaction to move forward, an energy…