particles with kinetic energy over the activation enthalpy that occur‚ the faster the overall reaction. During this investigation I am focusing on the effect of temperature and concentration while aiming to maintain other rate determining factors at a constant level in order to ensure reliable results. Effect of concentration Taking the collision theory into
Premium Chemical kinetics Chemical reaction Chemistry
De Leon‚ Jo-Anna Maria N. 3ChEA Group No. 2 Experiment No. 5 Spectrophotometric Determination of pKa I. Introduction The equilibrium constant of the dissociation of an indicator in water will be determined experimentally using spectroscopic method.This experiment aims to demonstrate the principle of equilibrium and the interaction of matter with light. II. Methodology Figure . UV-VIS Spectrophotometer 10 solutions covering the entire pH range from 1 to 13 were prepared
Free PH Acid dissociation constant PH indicator
of thiosulphate. Using the titre values Tt (ml)‚ time (s) and Tinf‚ graphs were plotted in order to obtain the rate constants k’‚ k’’ and hence ‘n’‚ the reaction order. For part 1‚ a value of 0.96 was obtained for the slope of the graph‚ which is approximately equal to 1‚ indicating that this is a first order reaction. A value of 0.001 was then obtained for k’‚ the rate constant. For part 2‚ the slope was found to be 0.91 which is again approximately equal to 1. A value of 0.0005 was obtained
Premium Rate equation Chemical kinetics Reaction rate
resists (or buffers) a change in its pH. That is‚ we can add a small amount of an acid or base to a buffer solution and the pH will change very little. How to calculate pH of buffer solution containing both acid and conjugate base? Dissociation constant definition 1.1 can be rearranged into or (note that due to sign change [A-] was moved to nominator). This is so called Henderson-Hasselbalch equation (or buffer equation). It can be used for pH calculation of solution containing
Free PH Acid dissociation constant Buffer solution
CHAPTER 3 THEORETICAL FRAMEWORK The theoretical framework of the thesis is multidisciplinary in approach. First‚ tourism impacts and tourism in the Gross Domestic Product are pooled into the framework to better understand the impact of tourism in the whole economy. Finally‚ general equilibrium theories and the theoretical structure of an applied CGE model are briefly discussed to better understand the framework under which the tourism sub-sector interacts with the other sectors‚ sub-sectors
Premium Consumer theory Tourism Economics
neutralizing the acid. The volume of base added can be determined by the difference in the initial and final volume marks on the buret. At a certain volume of added NaOH‚ all the KHP acid will be neutralized due to the large equilibrium dissociation constant (Kb) of the base. This point of titration is referred to as the equivalence point. Considering the 1:1 stoichiometry of this acid-base reaction NaOH(aq) + C6H4(COOH)(COOK) (aq) C6H4(COONa)(COOK)(aq) + H2O(l) the point of equivalence is the point
Premium PH indicator Titration PH
Separation of a Carboxylic Acid from a Neutral Compound by Extraction Reference: Smith‚ Chapter 2 (Acids and Bases) Introduction Carboxylic acids and phenols are two families of organic compounds that contain carbon‚ hydrogen and oxygen‚ and also react with water to yield an excess of hydronium ions over hydroxide ions. Pure water has a pH of 7‚ which means it has a hydronium ion concentration‚ [H3O+] of 10-7 M (M = molarity‚ moles/Liter). The hydronium ions in pure water come from the self-ionization
Premium Acid Acetic acid PH
In the poem “Frankenstein” by by Edward Field and the article “Tanzania’s Albino’s Face Constant Threat of Attack” by John Burnet‚ the main idea is they are both treated with violence. In the poem “Frankenstein”‚ Frankenstein is tortured by a Baron and the people in the Village. In the article‚ the Albino’s have their limbs sometimes chopped off because some witch doctors think they are magical. These two passages are paired together because they both have something to do with mistreatment. There
Premium Frankenstein Mary Shelley James Whale
Determination of Gas Constant R through Mg and HCl Reaction ! ! ! ! ! !1 of !9 IB Chemistry SL (Jr) Candidate: Yunha Kim Objective ! Candidates will react Magnesium with Hydrochloric acid and collect Hydrogen. The grams of the produced Hydrogen will be calculated and compared to the theoretical yield of Hydrogen. ! Controlled Variables ! Mass of Magnesium Ribbon This will be kept constant as the objective is to determine the Gas Constant (R). If this is influenced
Premium Ideal gas law Pressure Chlorine
AP Chemistry Chapter 17 Additional Aspects of Aqueous Equilibria Chapter 17. Additional Aspects of Equilibrium Common Student Misconceptions • • • • • Students often believe that the pH at the equivalence point for any titration is 7.00. In terms of problem-solving skills‚ this is probably the most difficult chapter for most students. Students tend to find buffers particularly difficult to understand. Students often forget to consider volume changes that occur when two solutions
Premium Acid dissociation constant PH Acetic acid