Hydroxide

CHAPTER THREE MATERIAL AND METHODS 1. PHYSICO-CHEMICAL CHARACTERCITICS: The effluent collected were analyzed in the laboratory for pH, acidity, alkalinity, salinity, total dissolved solid(TDS), conductivity, total hardness, calcium hardness, magnesium hardness, total solid, total suspension solid, turbidity, BOD, DO and COD using standard methods (APHA,2005). A.DETERMINATION OF pH: The electrode of pH meter was calibrated with standard buffer solutions of pH 4, 7 and 9. The electrode was then…

At 20 seconds, pH = 7.35 2. At 40 seconds, pH = 7.29 3. At 60 seconds, pH = 7.24 4. Did the pH level of the blood change at all during this run? If so, how? Yes, the pH level of the blood decreased. 5. Was the pH level always within the “normal” range for the human body? If not, when was the pH value outside of the normal range, and what acid/base imbalance did this pH value indicate? No, acidosis occurred at 40 seconds when the pH dropped out of “normal” range to…

Abstract: In this lab our main objective is to find the empirical formula of MgO, magnesium oxide. To do this first we have to make sure when we burn Mg in the crucible and it reacts to with O. This lab experiment Mg is complicated by another factor. Mg is so reactive that it reacts with N in the air so some of the Mg which is suppose to react with O will react will N instead. This obstacle can be overcome by simply adding water to the Mg3N2 to yield MgOH2 and NH3. This will undo the reaction so…

The chemical reaction can be dangerous I used the, A: soap and bleach and B: soap and water. The reaction in A as the week pass the soap starts to get smaller and smaller, on the left and the right it got white a little. The chemical reaction on A is that the bleach got clear and light at the soap that have been use in the experiment. In Bowl B the water and soap that have been used in the experiment was breaking up, getting lighter. In bowl B the soap took away the walker as the week have…

Table: Summary of method validation parameter results Validation parameters Acceptance criteria Results Aminexil Minoxidil System suitability Theoretical plates should be NLT 2000 2411 11620 The tailing factor should be NMT 2.0 1.50 1.10 The RSD of five replicate injection should be NMT 2.0% 0.42 0.90 Specificity Peak of Aminexil and Minoxidil should be pure Peaks of Aminexil and Minoxidil are pure. The degradation products should be well resolved from Aminexil and Minoxidil peaks All…

Experiment 1: Standardisation of approximately 0.25 M Hydrochloric Acid Abstract The aim of the study was to standardise a solution of hydrochloric acid with an approximate concentration of 2.5 M against sodium carbonate solution. The main steps of this experiment were preparing the sodium carbonate solution, transferring the solution into a conical flask by using a pipette, adding the bromophenol blue indicator and titrating with hydrochloric acid until the first green colour appeared. The…

Experiment 7 Electrophilic Aromatic Substitution Of Salicyamide Name: Lidia Santiana Palha Student number: s3333523 Email-address: lidiapalha@gmail.com Name of demonstrator: H.Helbert Reaction Equation Summary Salicylamide and sodium iodide are dissolved in ethanol, and stirred and cooled to 0. After that household bleach was added while stirring vigorously, solution changed from colorless to pale yellow. Sodium thiosulphate and hydrochloric acid were added aswell.…

The GCMS analysis showed the metabolites could be definitely identified as concern compound by comparisons with known authentic compound. The m+ ion is found at m/z94 for phenol. The molecular weight of the phenol is 94. The base peak value of phenol was observed as 94 and mass peak values were recorded as 66, 39, and 55. The m+ ion for acetophenone is m/z 120. The molecular weight of the compound was observed as 120, the base peak and mass peak values were recorded as 105 and 91, 77, 51, 39,…

Discussion Graph 1 displays the reaction time (in minutes) of how long it took for the Alka-Seltzer tablet to completely dissolve per trial. Graph 2 displays the averages of the reaction time which showed the higher the water temperature is, the faster the reaction time would be. At 65⁰C the average time for the Alka-Seltzer to completely dissolve was 1 minute 4 seconds followed by 1 minute 20 seconds at 35⁰C and ending with the highest average at 2 minutes 1 second (1.61). The hypothesis…

Sodium diethyldithiocarbamate, limiting equivalent conductance (Λ0), ion association, activation energy and thermodynamic functions. Introduction: The measurement of electrical conductivities of dilute solutions of salts or complexes is considered to be one of the important methods for studying the ion-pair or multiple- ion association not only in aqueous solutions but also in non-aqueous or mixed ones 1-4. Also, conductivity measurements were used to evaluate the hydration free energy of some…