The eudiometer will show the displacement of the water in volume of CO2. Hypothesis: I predict that the greater the concentration of hydrochloric acid, the greater the rate of reaction and so more carbon dioxide will be produced in the same time period than at lower concentrations. I predict this because there will be more collisions between the calcium carbonate and hydrochloric acid. Variable Factors Reasons Control 1.Time duration of experiment 2. Mass of Marble Chips 3.Surface Area of Marble Chips 4..
The higher the blood cholesterol level is the greater risk. According to Pflieger, DO, Winslow, MD, and Mills, PharmD (2011) “In one trial, patients given intensive therapy with atorvastatin (Lipitor) in a dosage of 80mg per day had significantly lower mortality 30 days after MI.” Blood pressure is the force of blood against the wall of artery as the heart pumps blood. If the pressure rises and stays high over time, can lead to plaque buildup and can damage the heart. Antihypertensive (reduces blood pressure) medications help by decreasing myocardial demand, which is increased in those with CAD.
Certain factors affect the rate of reaction:- Temperature – temperature increase the rate of reaction because the molecules gain kinetic energy and this increases the likelihood of an enzyme and a substrate colliding, subsequently increasing the rate of reaction. If this temperature goes over the optimum temperature then the active site of the enzyme will become denatured. The bonds that hold the enzyme together will be broken causing it to lose its 3-D structure, and substrate will no longer be able to fit , so no more E/S complexes will be formed. PH – Like temperature enzymes have an optimum PH. If the PH goes over the optimum PH then the chemical nature of the amino acids can alter.
Favourable Reaction Conditions One can use Le Châtelier's principle to explain the most favourable reaction conditions for the production of nitrogen (II) oxide. By decreasing the pressure, temperature or by adding/removing different components of the reaction, one could manipulate the equilibrium creating the most favourable reaction conditions. By decreasing the pressure the equilibrium will shift by producing more molecules in order to increase the pressure of the reaction again. The equilibrium will move in such a way that the pressure increases again. Due to the fact that the ratio of the molecules is 9:10 in the reaction, by decreasing the pressure the position of equilibrium will move towards the right-hand side of the reaction.
When we increase the temperature of the Hydrochloric acid (HCl) the reaction will be quicker, more gas will be formed in a short amount of time. Because increasing the temperature, the particles move faster the ions have more kinetic energy, causing more collisions. Which will increase the reaction. As the temperature decrease the reaction rate will decrease because the particles have less thermal energy, will travel slower, less collision with other particles as a result of this the reaction rate will be lower. Similarly when the Calcium Carbonate (CaCO3) is broken down into powder the rate of reaction will increase.
The pH level where the enzyme works best depends on where it is in the body. For example, intestinal enzymes work best with a pH level of about 7.5 and enzymes in the stomach work best with a pH level of about 2. As the graph shows, the rate of reactions increase until the pH level reaches 8, where there is a rapid decline in the rate of
Yes, my hypothesis was correct (I predict the amount of gas produced over time by yeast is exponential, because it will keep growing overtime, and not by the same amount every single day.) My balloon did grow exponentially over time. How large do you think if you measured the volume tomorrow? If I measured tomorrow I think it would be around 62 cm. Based on the fermentation equation, if the amount of yeast is limitless, how many molecules of CO2 are created when yeast have 100 molecules of sucrose to break down?
The effectiveness of lipase on temperature Abstract Enzymes are biological catalyst that speeds up the rate of reaction. Different enzymes work best at different temperatures, which is also called an optimum temperature. Different enzymes also have different functions. Lipases are enzymes, needed to break down lipids (fats and oils) into the products - glycerol and fatty acids. They work best at room temperature around 36-40 C. Introduction For this experiment, I will be looking at how the change in temperature affects the rate of reaction.
1 mark AND Enzymes function best at their optimum pH, which in this case has been found to be (whatever their results indicate). When enzymes are acting at their optimum level the maximum amount of oxygen gas will be produced. 1 mark AND Enzymes begin to be denatured when the pH of the surrounding environment moves away from the optimum pH. The rate and extent of denaturation increases as the pH value moves away from the optimum pH. 1 mark AND Extreme pH denatures the enzyme, altering the shape of the active site and preventing the enzyme and substrate forming a complex, thereby decreasing the rate of the reactions.
Temperature, time, quantity of water and yeast, as well as salt are the factors that influence dough rising.2 Discussion Yeast is extremely sensitive to temperature and the best temperature for yeast to grow is at 30-37oC 3 which is near the temperature that we used (38oC). The longer the yeast is allowed to work, the more gas is created. The dough is ready for baking when it has doubled its volume.2 The quantity of yeast depends on the surrounding temperature, more yeast for very cool environment and less yeast for very hot environment.2 The quantity of water affects the flexibility of dough. If the dough is too stiff, the dough will rise improperly and slowly. Salt affects yeast growth.