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the effects temperature has on reaction rate
the effects temperature has on reaction rate
the effects temperature has on reaction rate
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The Effect of Temperature on the Rate of a Reaction Aim and Hypothesis
The investigation that we have chosen to do is how the effect of
temperature affects the rate of reaction of hydrogen peroxide to water
and oxygen using the enzyme catalase.
I predict that the higher the temperature the faster the rate of
reaction will be and the more oxygen there will be given off. I've
based this prediction on kinetic theory (every 10 degree rise in
temperature the rate of reaction doubles.) This is because the
substrate will lock on twice as fast, as it is travelling twice as
fast.
To back up this prediction a pre experiment was carried out, one
result was obtained, using this result here is a table of predicted
values:
Temp of 2H2O ËšC
Amount of Oxygen produced CM3
7
3.5
17
In a substance the rate of reaction will be quicker if it has a large
There is an optimum temperature that enzymes have for maximum productivity and its rate of reaction. This temperature is usually not that far away from the temperature of the body or room temperature. But, when the temperature is substantially reduced, like being in the ice bucket for ten minutes, this usually reduces the productivity of the enzymes. Similar to the experiment, it takes more time for the same amount of work when the temperature is severely decreased. So, an increase in temperature increases the reaction rate of enzymes. But, there is also an upper limit to the factor of temperature. After a certain temperature, the extreme heat can be harmful for the enzymes and can cause denaturation, as bonds in the enzymes can break and can change the shape of the enzyme. So, extreme low and high temperatures has a decreasing effect on the activity and reaction rate of
It is important however to note that the NH4 and K ions are still in
The Effect of Changing the Concentration of the Enzyme Catalyst on the Rate of Reaction on Hydrogen Peroxide
In this experiment there five different phases and in each a different factor of the Collision Theory was tested. The first phase was called, Nature of the Reactants and it had three parts to it. In the first part of it which was steps 1-4, 5 pieces of mossy zinc were put into 3ml of 2M H_2 〖SO〗_4 and during this time bubbles were produced. After a few minutes the zinc was removed from the acid and it was now clean zinc.
We hypothesized that the more heat that we put in or the more heat that we take out, would denature the enzymes and slow down the rate. We set up a plate of depressions the same way as above. We boiled water to 50o C, poured the water onto a tray and did the steps of placing the discs in same as above and timed it until they rose above the surface. We did the same process but instead of using heat, we put ice and cold water on a tray which was about 3.5o C. The control for this experiment was the one that we did before because it was at room temperature. The results for the hot tray showed no rate. The cold tray sped up the rate of reactions making it occur faster than at room temperature starting at 6 for 100% catalase. This lab supported and disproved our hypotheses. It supported our hypothesis for adding more heat because the enzymes were in such hot conditions that the heat denatured the enzyme, making it not possible to create a chemical reaction. So the rate of reaction was zero because the enzymes didn’t split apart hydrogen peroxide. The cold tray disproved our hypothesis. We thought that the cold tray would also denature the the catalase so that there would be little to no rate. Maybe the data came out this way because the catalase was left out in room temperature for a long time that maybe when we took away the heat, it sped up the reaction rate.
The enzyme will drastically slow down activity due to cold temperatures of 24°C. Just like the energy stored in human and plant organisms. If cells are under a certain temperature within living things, the ability to function will not hit equilibrium but will slow down the rate of chemical reaction. It is clear that room temperature is where we will see most of the activity. This is part of the reason why homeostasis is important to living organisms – because homeostasis is the process to maintain internal temperatures so that the structure and function can work properly. The catalase enzyme vs. hydrogen peroxide delivered clear results that environmental factors can alter enzyme activity. That being said our hypothesis was accepted based on the prediction that heat will denature the enzyme while the activity of cold and room temperatures will still have a reaction. This hypothesis could have wrong if other factors were involved such as, if we let them sit for a long period of time or if there were more temperatures involved. In conclusion, later on we may want a larger form of data by including the class results but as of now this experiment went well and confirmed our
Will an increase in temperature of corn syrup yield a higher rate of fermentation? This is the question, which served as the foundation to which this experiment was initially conducted. The hypothesis from which this experiment was constructed was an increase in the temperature of the water in which fermentation occurs, will increase the rate at which fermentation happens, due to the dependence on temperature. With a rise in temperature less activation energy is needed, thus the rate of fermentation will increase. Throughout the course of the experiment, many trials served as the basis of the pre-existing assumption that an increase in temperature would lead to an increase in the rate of fermentation. Cold water, water at room temperature as
The enzyme that we are using to see a chemical reaction is known as catalase located into the potato. This enzyme is then going to act upon the substrate in this case hydrogen peroxide. When these two come together forming the enzyme substrate complex we will begin to see the chemical reaction carried out. The question then becomes what happens to the enzyme catalase when its exposed to extreme temperatures versus room temperature? Will it speed up? Slow down? Or fail to work in general? For my experiment I compared the difference in O2 bubbles when one potato was heated and another was at room temperature. My hypothesis is that when the potato is heated to an extreme temperature the enzyme catalase would be altered to much stopping the catalyzed ability to work with hydrogen peroxide resulting in no chemical reaction. My reasoning for this is because the enzyme is being cooked for too long changing the form and structure of the potato and causing the catalase to lose its potential to push itself onto the
How Temperature Affects the Rate of Reaction in the Reaction of Magnesium and Hydrochloric Acid
Alternative Hypothesis 1: If the enzyme catalase reacts, then the rate of reaction for the endotherms will have a consistent reaction rate because the endotherms produce more heat for the enzyme to operate efficiently.
Effect of Temperature on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid Investigation Chemical reactions are used in our everyday life, they literally keep us alive. They are used in food, respiration and everywhere else in the environment. A chemical reaction mainly occurs when reactants react together to produce a new product. The speed at which this reaction takes place is called the rate of reaction. The product produced has a number of particles in the solution that has formed from the reactants.
The pH of the solution would alter the rate of the reaction if it was
The Effect of Temperature on the Rate of Reaction Between Hydrochloric Acid and Calcium Carbonate
The aim of this experiment was to investigate the affect of the use of a catalyst and temperature on the rate of reaction while keeping all the other factors that affect the reaction rate constant.