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A Lab Report on Testing the Rates of Yeast Fermentation
Testing Rates of Yeast Fermentation Title Section The first part of the experiment was done on November 29th 2014 at approximately 7:00 pm. The second part of the experiment was done on November 12th 2014 at approximately 7:00 pm. The title of this lab is Testing Rates of Yeast Fermentation. Introduction The experimen...
A Lab Report on the Quality and Quantity of Starch in Different Supplements
The first part of the lab was done on Tuesday October 7, 2014. The second part of the lab was done on Tuesday October 21, 2014. There are two parts to this lab: qualitative and quantitative. The purpose of the Quantitative experiment was to test unknown supplements for starch, protein or sugar. The purpose of the Qualitativ...
An Experiment Determining the Effectiveness of Different Buffer Solutions
Aim: The aim of this lab is to investigate and measure the effectiveness of five buffer solutions made with combinations of ethanoic acid (CH3COOH), sodium ethanoate (NaCH3COO), ammonia (NH3), and ammonium chloride (NH4Cl), sodium hydroxide (NaOH), and hydrochloric acid (HCl) by creating titration curves for the following s...
An Analysis of the Lab Experiment, determining the equilibrium constant Kc
The purpose of this lab is to experimentally determine the equilibrium constant, Kc, for the following chemical reaction: Fe3 (aq) SCN–(aq) FeSCN2 (aq) iron(III) thiocyanatethiocyanoiron(III) When Fe3 and SCN- are combined, equilibrium is established between these two ions and the FeSCN2 ion. In order to calcula...
An Experiment to Understand the Process of Osmosis and Diffusion
There are two different ways that molecules, nutrients, and ions move across cell membranes. One of these ways is through diffusion. Diffusion is a process that occurs whenever dissolved particles move from an area of high concentration (more of them) to nearby areas where they are less concentrated (Weisshaar 2016). The...
An Experiment on the Calculation of the Dissociation Constant for a Weak, Unknown Acid
Introduction The purpose of this experiment was to calculate the dissociation constant for a weak unknown acid when it was titrated with NaOH. In Bronsted-Lowry Theory, a weak acid is an acid that only partially dissociates into a conjugate base and hydronium ions . Weak acids are less likely to dissociate their ionic...
An Experiment to Determine a Numerical Value Using Titration Curve
CHEM 201; EXPERIMENT 4 TITRATION CURVES PROCEDURE See the pre-lab report on page 9 of my laboratory notebook for an outline of the general procedure. EXPERIMENTAL DATA See last page for titration curve graph. Equivalence point from first titration: 15.42 mL Equivalence point from titration curve: 15.65 mL...
An Experiment to Determine the Relation of Diffusion Rate to the Concentration of a Solution
Experimental Lab 5: Diffusion and Osmosis Introduction In order for cells to maintain homeostasis, they must allow substances to move in and out of the cell. There are four different ways in which substances move across differentially permeable biological membranes, including simple diffusion, facilitated diffusion, ac...
An Experiment to Determine the Reaction for a Specific Rate Law
Abstract: The goal of this experiment was to find the rate law for the reaction 2H2O2 KI → 2H2O O2(g), and to then determine the activation energy (Ea) and frequency factor (A). To do this, the experiment was split into two parts to be completed over two days. The first part of the experiment was to determine the rate...
An Experiment Determining the Concentration of Food Dye in Listerine Purple Mouthwash
Determining the Concentration of Food Dye in Listerine Purple Mouthwash Abstract The purpose of this experiment was to determine the types and concentrations of food dyes present in a given solution, in this case, purple Listerine mouthwash, and to then replicate the solution using food dye in the lab. To find the dyes...