The second one could have iron +2 and copper +2. The third one could have used iron +3 and copper +1 and the last one could have iron +3 and copper +2 There are several factors that can influence the rate of a chemical reaction. In general, a factor that increases the number of collisions between particles will increase the reaction rate and a factor that decreases the number of collisions between particles will decrease the chemical reaction rate. The factors that can influence the rate of a chemical reaction are: the concentration of reactants, the temperature, the medium and the presence of catalyst and competitors. The higher the concentration of reactants is, the higher the rate of a chemical reaction is.
My graph does not plateau, although it may have done so if higher temperatures were available to me. From 26°C to 40°C there is a gradual increase in the absorbency, which indicates that it is because of naturally occurring diffusion. Diffusion of the pigment happens because the concentration of beetroot pigment is higher within the cell than outside the cell. So diffusion occurs down the concentration gradient, from an area of high concentration to an area of lower concentration, across the partially permeable membrane of the beetroot cell. As the temperature increases the molecules within the beetroot are given more kinetic energy and thus the process of diffusion is speeded up.
I also predict that doubling the concentration of acid will require double the amount of alkali to reach an end point. This would be due to there being more hydrogen ions present in a more concentrated acid, and therefore more OH- ions needed to neutralise these. When concentration doubles, this means there is twice as many H+ ions; therefore twice as much alkali will be needed to balance them out. Apparatus list:
He said that the worldwide population will triple over the decades; so, nuclear energy would be essential for many lives that have come a costume and rely on this source of energy. He also points out the fact that nuclear power plants are essential because it is a powerful source of energy. It is relatively cheaper and faster compared to other alternative sources. Nader counters with the possible devastating outcomes that could be created by leaked radiation from damaged nuclear power plants would result in inhabitable lands. He also points out the fact that people should focus on the present consumption of energy, rather than the future for energy conservation.
a. decreasing the temperature b. changing the concentration of A c. changing the concentration of B d. changing the concentration of C e. letting the reaction go on for a long time 4. The gas phase reaction A + B C has a reaction rate which is experimentally observed to follow the relationship rate = k[A]2[B]. If the concentration of A is tripled and the concentration of B is doubled, the reaction rate would be increased by a factor of ____. a. 6 b.
The fact that the energy needed to break the necessary bonds falls within the visible light spectrum is the basis on which the experiment is based. This brings up the issue of selectivity. For example, the bromine radical is more selective than the chlorine radical. This has to do with electronegativity. It is known that chlorine is more electronegative than bromine, and thus chlorine is more reactive, and less discriminatory as to what it will react with, thus making bromine more “selective”.
Title Problem Definitions Hypothesis Background Information Procedure Materials Results Conclusion References and Acknowledgements Reactions with Alka-Seltzer How does the temperature of water effect how fast the chemical reaction of Alka-Seltzer happens? I think the Alka-Seltzer will react faster in very hot water because the molecules are moving around faster. Therefore, they will run into each other faster causing a faster chemical reaction. Molecules: Two or more atoms which have chemically combined to form something Temperature: A measure of warmth or coldness Reaction Rate: The speed of a reaction Reactants: The substance(s) first involved in a chemical reaction Chemical
Below is a table showing the rate of reaction as the concentration of substrate is increased. The rate of reaction will increase as the concentration of substrate increases due to the increase in potential of a substrate colliding with an enzyme. You can see by looking at the graph that the rate of reaction will increase until the enzymes become saturated, the enzymes reach maximum productivity. All active sites are occupied. Product cannot be formed any quicker as maximum efficiency as been reached and the only way to increase the rate of reaction any further would be to increase the concentration of enzymes.
This variety of results allows to find the optimum point for the enzyme to break down the substrates, the faster the better. The objective for this experiment is to find the optimum temperature for Catalase to break down hydrogen peroxide. 'How temperature affects the rate of reaction of Catalase on the breaking down of Hydrogen Peroxide. '(1) Image 2_Hydrogen Peroxide/Catalase This image explains what will happen in between the Catalase and the Hydrogen Peroxide. In situation A) The hydrogen peroxide is the substrate and its going to go to the Catalase which is the enzyme to be catalised.
So, it makes sense that the speed of sound has the same order of magnitude as the average molecular speed between collisions. In a gas, it is particularly important to know the temperature. This is because at lower temperatures, molecules collide more often, giving the sound wave more chances to move around rapidly. At freezing (0º Celcius), sound travels through air at 331 meters per second (about 740 mph). But, at 20ºC, room temperature, sound travels at 343 meters per second (767 mph).Liquids:Sound travels faster in liquids than in gases because molecules are more tightly packed.