Reaction rate

Chapter 4 - Discussion A standard curve of p-nitrophenol was drawn at the start of the project, before any enzyme assay of the fractions. The standard curve is set up so the equation of the line can be used to measure the enzyme activity in each sample fraction. P-nitrophenol shows a linear relationship with acid phosphatase. An Enzyme assay gives the activity levels of acid phosphatase in each fraction. The results from each fraction were placed into the equation of the line from the standard…

I: Introduction: a. background information- Physical Changes are changes that do not involve a change in molecular structure. They can be identified by a change in size, a change in shape, or a change in the state of matter. Chemical changes are changes that involve the re-arrangement of atoms in the molecule. They can be identified by a color change, if a new gas is given off, if a precipitate or new solid forms, and if light, electricity, or heat is given off. b. observations- The observation…

To improve the yield of the ester the reaction should be heated using a high temperature. This would favour the formation of the products in this reaction, as the formation of an ester (esterification) is an endothermic reaction. Thus use of a high temperature will push the equilibrium to the right hand side, and a larger yield of the ester will be produced. To improve the yield of the Ester the reaction mixture could be refluxed for longer period of time so that more reactants are converted…

different liquids, to conclude the role of the molecular size and structure of the intermolecular forces. Part A: In the first part of the experiment, the temperature changes will by measuring by the liquids evaporation, and since it is an endothermic reaction, the temperature will decrease. The temperature probes will be connected, and the computer will prepare to collect the data, as a first step. Two…

DISCUSSION OF RESULTS: Answer the following Questions: 1. How did changing the angle of the slope affect the acceleration of the object? Use information from the summary table and/or graph. According to our data, the larger that the slope was, the faster the acceleration of the object was. Although, this was not the same for the 30° angle and the 40° angle. This may have occurred due to an error in recording the data or a bad ticker timer being used. 2. What forces are acting on the object…

What is the percentage of change in Reaction Time as age increases? As people increase in age, their reaction time can change as well, either increasing or decreasing. If kids in different age groups measure their reaction time using a test online, then the percentage of change in reaction time will increase with age. There are an abounding amount of things that can affect how fast or slow someones reaction test time is, along with what happens to your body when it is measured and the process of…

Along the lines of rate laws come half-lives. Such a common topic that comes to mind with half-lives is the decay of radioactive elements, or the time it takes for a certain sample of an element to reach half of its original size. For example, during the Chernobyl power plant incident in 1986, one of the most dangerous elements to begin its decay was Cesium-137 which has a half-life of 30 years. Therefore, people can’t move back to the area because of the deadly amounts of Cesium-137 still…

Results and discussion 3.1 Ionic conductivity measurements The complex impedance plots for the polymer electrolytes with different amounts of TBAI /LiI is shown in Fig. 1. It can be displayed that the ionic conductivity increases with the increase in TBAI salt content and reaches the maximum value of 1.737×10-3 S cm-1 at 298 K for 60 % of TBAI content, beyond decreases on further addition of TBAI. At a low content of TBAI, the conductivity is low due to the small number of charge carriers in…

solution of and synthesize a number of copper compounds by chemical reactions and observing every colour change and appearance, As a final step of part A , we will recover copper metal . In Part B we will synthesize two copper (I) compounds and observe their reactions . However we also get to learn using new techniques for instance , Decantation technique , vacuum filtration…

Hydrochloric Acid Lab, we concluded that the chemical reaction that occurred was exothermic and a single displacement reaction. The experiment consisted of zinc (Zn) and hydrochloric acid (HCl) being mixed in a test tube immersed in water. First of all, bubbles were produced during the reaction. Also, a white powdery substance was produced with properties different from those of any reactant. The bubbles suggest that the reaction was a chemical reaction as bubbles indicate a formation of gas,…