Constant

My Time of Constant Growth One of the reasons eighth grade Ky Majors choose St. Cecilia was due to the fine arts program. Attending the forensics tournaments, hosted here was a main contributor to decision and since I have never looked back. Immediately upon attending I joined the forensics team and during my Sophomore and Senior year, I did the musical. The decision I made in eighth grade and even throughout high school have majorly contributed to my love and growth as an actress. My…

This can also be seen by the value of the rate constants where k1 k2. Additionally the process of phenol decomposition by direct ozonation is different than that of indirect ozonation. Degradation of phenol by OH radicals favors the formation of aromatic by products, following the formation of organic…

The amount of time required for a chemical reaction to come to completion can vary tremendously depending on the reaction (Addison-Wesley, 2002). The speed at which any reaction proceeds can be defined as a reaction rate (J. Laidler, 2015). The rate of reaction can only be obtained experimentally, in order to yield a rate law. By conducting this experiment, it has the potential to harvest useful information regarding the understanding of rates of reaction. Understanding the rate of reactions is…

Because there are 5 things simultaneously present, 5 equations must be made. Two for the equilibrium constants, one mass balance equation for all A containing material and one for Na+, and 1 charge balancing equation as shown in the appendix. Since we are looking for the KA we need the equation in the form of KA = [H3O+][A-]/[HA]. Therefore the 5 equations…

Since acetic acid is considered a weak acid (strong within the scale of weak acids), there is a range at which the acetic acid and acetate will form a stable buffer. Using the Henderson-Hasselbalch equation for buffers, it’s possible to calculate the pH based on the ratio of acid to conjugate base, or calculate the ratio given the pH and pKa value. Finding charge on a protonated amine: The pKa value given for the amino group on any amino acid specifically refers to the equilibrium between the…

The purpose of the experiment is to determine the equilibrium constant of the reaction between Fe3+ ions and SCN2+ ions. In solutions one to five (the reference solutions), a large volume of concentrated Fe3+ ions was used in order to react with and convert all of the SCN2+ ions into FeSCN2+ ions. In solutions six to ten (the test solutions), a constant volume of Fe3+--in lesser concentration--and varying volumes of SCN2+ ions were diluted with DI water and reacted to produce an unknown amount…

Ka, or the acid dissociation constant, gives a measure to which an acid dissociates in a solution. It also provides a measure of the strength of an acid. If the value of Ka is high, the said acid s largely dissociated, making the acid strong. However, when the value of Ka is small, the…

Xanthan and Chitosan concentration. The Chitosan solution pH was kept constant at 5. The above table gives the inference that when Xanthan concentration is less than or equal to 0.5% or Chitosan concentration is less than or equal to 0.5%, the capsules formed are unstable. Similarly, amorphous capsules were reported when the concentration of Xanthan was varied as shown in the given table. The Chitosan solution pH was kept constant. This phenomenon was due to the increase in viscosity of…

This report will discuss multiple experiments regarding chemical equilibrium. Chemical equilibrium is when both reactants and products are both equal to each other. If one is not equal to each other, than the direction of shift will move to where equilibrium has been tampered with. Throughout all the labs, we observed that with different chemicals we have different directions of shift. From acids to bases, we see that direction of shift can vary which leads to different conclusions. We…

analyzing the rates of certain species and reactions, and is a crucial technique to predict different reactions. Kinetics is a very broad topic, thus the experiment focused only on the derivation of empirical rate laws and their corresponding rate constants. The rate of a specific reaction can be expressed with an experimentally-determined, or empirical, rate law in the form of rate = k[A]x[B]y[C]z. The exponents x, y, and z depend on the term…