Activation Energy Investigation
Chemistry Exploration Topic: determining the activation energy of a chemical reaction Research Question: What effect does temperature of the chemical reaction have on the activation energy ? ICT: Microsoft Word Autograph Microsoft Excel Introduction This experiment is designed to help in estimating the activation energy of the rate-limiting step in the acid catalyzed reaction of acetone with iodine. This is achieved by measuring the reaction rates at different reaction temperatures over the experiment. Once the raw data is obtained, I will analyze the data with the help of an Arrhenius plot. This is a tool used in determining the activation energy of chemical reactions. Here, the natural logarithm of the rate of reaction …show more content…
The exploration was meant to also analyze the effect that temperature has on the rate of a chemical reaction. From the raw data obtained, it is clear that the time taken to complete the reaction decreases with increase in temperature. The effect of temperature on the rate of reaction is however dependent on the activation energy. When the activation energy is positive, as the temperature will increase , the rate of reaction will also increasing meaning that they are directly proportional .However, if the activation energy is negative, the rate of the chemical reaction will decrease as the temperature is increased. To carefully describe the relationship between the rate of reaction and the temperature, a graph of these two variables is plotted. It can clearly be seen that the rate of reaction gradually increases as the temperature is increase. This is best explained by the principles of chemical kinetics. The increase in temperature results in an increase in the kinetic energy of the molecules. Consequently, these molecules are able to move faster and the probability of collusion with other molecules is increased. Hence, the time taken for the reaction to be completed is reduced and the rate of reaction increases. Conclusion The experiment was conducted with the aim of being able to determine the activation energy of the reaction. Additionally, the effect of temperature on the rate of reaction was also to be
Alka Seltzer Research Paper
79 Words | 1 PagesHow is temperature related to this reaction? The higher the temperature the slower they move.
Ap Biology Review Sheet
855 Words | 4 Pagescoupling- When endergonic reactions utilize the energy that was released from an exergonic reaction. 17. energy of activation-The amount of energy that is needed in order for a reaction to start. 18. entropy-
Ap Chemistry Semester 1 Final Review Paper
810 Words | 4 PagesThe molar heat of combustion of a compound is 1250 kJ/mole. If 0.115 moles of this compound in a bomb calorimeter with 2.50 L of water, what would the temperature increase be? If change in heat is positive it is an _______ reaction If change in heat is negative it is an_______ reaction
Horseradish Peroxidase Lab Report
1090 Words | 5 PagesABSTRACT To catalyze a reaction, an enzyme will grab on (bind) to one or more reactant molecules. In this experiment we examined how increasing the volume of the extract added to the reaction would affect the rate of the reaction. The enzyme used was horseradish peroxidase which helps catalyze hydrogen peroxide. Using different pH levels, the absorbance rate of the reaction was measured to see at which condition the enzyme worked best. The rates of absorption were calculated using a spectrophotometer in 20 second intervals up to 120 seconds.
Hydrolysis Of T-Butyl Chloride Lab Report
1766 Words | 8 PagesAbstract In this experiment, the reaction kinetics of the hydrolysis of t-butyl chloride, (CH3)3CCl, was studied. The experiment was to determine the rate constant of the reaction, as well as the effects of solvent composition on the rate of reaction. A 50/50 V/V isopropanol/water solvent mixture was prepared and 1cm3 of (CH3)3CCl was added. At specific instances, aliquots of the reaction mixture were withdrawn and quenched with acetone.
Why Gases Behave Non-Ideally In High And Low Temperature
482 Words | 2 PagesThat happened because of the inter molecular attraction between the molecules. B. When increasing the temperature for the viscosity and surface tension in a liquid, it allows the molecules to move more freely loosening
Essay On The Effect Of Temperature On Osmosis
1159 Words | 5 PagesWhen temperature is increased, the amount of obtainable energy increases; meaning that particles will move at faster pace at a higher temperature. Thus rate at which molecules diffuse will progressively speed up as the temperature increases. However if temperature of solution is decreased the rate of osmosis will decrease and rate at which molecules diffuse will be significantly less than that of higher
Laboratory Report on Enzyme Activity
1407 Words | 6 Pages40 celcius. At lower temperatures, sucrase activity begins to be inactive but quickly becomes active. At higher temperatures, sucrase activity Laboratory Report/ Natalie Banc/ Enzyme Activity/ Elizabeth Kraske/ 09.22.2016/ Page [2] of [4] starts to slowly become less active. 4. Was sucrase activity higher at 25 °C or 55 °C?
The Importance Of Enzymes
1434 Words | 6 PagesThe Maxwell Distribution Curve below supports the prediction about the increase of temperature, increasing the rate of reaction. Curves T1 and T2 show the distribution of kinetic energies for gaseous at those two temperatures. Curve T2 represents a higher temperature and thus is positively skewed. The peak of the graph with the most molecules is shifted towards a higher kinetic energy and the curve broadens out. For both T1 and T2, the total area under the curve is the same and the fraction of molecules with energy greater than the activation energy (Ea) is significantly larger in T2 than in T1.
Sebacoyl Chloride And Hexamethylenediamine Synthesis
1259 Words | 6 PagesThe cylinder with the sebacoyl chloride was 27.14 grams and the cylinder with hexamethylenediamine was 36.14 grams. We then calculated the mass of the reactants, which is found when we found the difference of the weight of the cylinders before and after sebacoyl chloride and hexamethylenediamine were added. The total mass of the reactants was equal to 41.35 grams. After we calculated these results, we started to create the chemical reaction. We put the sebacoyl chloride and the hexamethylenediamine in separate beakers, but then slowly added the hexamethylenediamine to the beaker with the sebacoyl chloride in it.
Catalase Lab Report
1511 Words | 7 PagesThe beginning reaction that occurred at the pH level of 1 shows that the mean reaction rate was incredibly low, at 2 mL/minute. This then increased by 57 units once it reached its peak productivity of 59 mL/minute observed at pH 8. pH levels 6, 7, and 8 only varied between 1 and 2 mL/minute, which demonstrated similar rates of reaction. At pH 10, the reaction rate decreased considerably as it declined by 58 mL/minute, and maintained that productivity at pH 12.
Effect Of Temperature On Amylase
1167 Words | 5 PagesDependent The time taken for the bluish -black color to fade away (color of Iodine solution mix with starch solution ). The rate of enzyme reaction Minutes (min) Table 1.1 – Table shows the controlled variables in the experiment variables Units Measures of controlled variables.
Alkaline Phosphatase Enzyme Lab Report
2575 Words | 11 PagesPredict/ roughly determine the Vmax and ½ Vmax values from the peak of the graph, where the slope of the graph levels off (the asymptotical line). Predict/ roughly determine the Km by reading off of the graph the corresponding substrate concentration on the x-axis for the ½ Vmax value. Plot a Lineweaver-Burke graph (the inverse of the velocity of the reaction vs. the inverse of the substrate concentration). Calculate accurate Vmax and Km values using the following equation for the Lineweaver-Burk
The Effect Of Temperature On The Activity Of A Potato Lab
3027 Words | 13 PagesAs you increase the temperature, the rate of reaction increases. This occurs because as you heat a substance, the particles move faster and
Hydrochloric Acid And Sodium Thiosulphate Lab Report
1539 Words | 7 PagesIntroduction The goal of the experiment is to examine how the rate of reaction between Hydrochloric acid and Sodium thiosulphate is affected by altering the concentrations. The concentration of Sodium thiosulfate will be altered by adding deionised water and decreasing the amount of Sodium thiosulphate. Once the Sodium thiosulphate has been tested several times. The effect of concentration on the rate of reaction can be examined in this experiment.
More about Activation Energy Investigation
Alka Seltzer Research Paper
79 Words | 1 PagesAp Biology Review Sheet
855 Words | 4 PagesAp Chemistry Semester 1 Final Review Paper
810 Words | 4 PagesHorseradish Peroxidase Lab Report
1090 Words | 5 PagesHydrolysis Of T-Butyl Chloride Lab Report
1766 Words | 8 PagesWhy Gases Behave Non-Ideally In High And Low Temperature
482 Words | 2 PagesEssay On The Effect Of Temperature On Osmosis
1159 Words | 5 PagesLaboratory Report on Enzyme Activity
1407 Words | 6 PagesThe Importance Of Enzymes
1434 Words | 6 PagesSebacoyl Chloride And Hexamethylenediamine Synthesis
1259 Words | 6 PagesCatalase Lab Report
1511 Words | 7 PagesEffect Of Temperature On Amylase
1167 Words | 5 PagesAlkaline Phosphatase Enzyme Lab Report
2575 Words | 11 PagesThe Effect Of Temperature On The Activity Of A Potato Lab
3027 Words | 13 PagesHydrochloric Acid And Sodium Thiosulphate Lab Report
1539 Words | 7 Pages