supported by the raw data values of the control test tubes as it demonstrated that the hydrogen peroxide and the pH buffer solution did not affect the boiling chips (which did not contain the enzyme catalase) and it was from the presence of catalase within the potato discs which caused the resulting froth…
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…
This is cleaned with water and ethanol followed by etching with 10:1 HF to remove the native oxides. This is directly dipped into 10% 10-undecanoic acid in deaerated toluene for 19h, with exposure to 352 nm ultraviolet light for photoactivated alkene insertion into Si-H bonds, which creates a carboxylate-terminated surface. The Au electrode was cleaned and immersed into 1mM 11-Mercaptoundecanoic acid and 50mM phosphate buffer for about 17h to form a carboxylate-terminated self-assembled…
For this catalase experiment it was decided that the group was to keep the concentration of catalase and hydrogen peroxide the same and only change the level of pH buffer throughout the experiments conducted. This was done to observe the effect different levels of pH buffers have on the breakdown of hydrogen peroxide and the volume of oxygen released. The results from the majority of experiments conducted reflect that though they are in consensus with the hypothesis that the volume of oxygen…
The values that arise from the feed analysis were: the dry matter, crude protein, acid detergent fibre, neutral detergent fibre, pH level and ash. Specifically, the value for the dry matter is the corrected value in order to allow for acids, volatile acids and other components that lost on oven drying. The crude protein which is determined from the total nitrogen of silage is 88.33 (g/kg DM). The value of the acid detergent fibre which is a measurement of lingin, cellulose and lignified nitrogen…
Exercise 10: Acid/Base Balance Worksheet
Assignment Due: Week 1
Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus.
Please make sure that your answers are typed in RED.
Please type your Name and Student ID Number here: Stephanie Brewer 4189660
Activity 1: Normal Breathing
1. At 20 seconds, pH = 7.41…
The phosphate buffer system(pKa=6.8) has very low concentration in blood. Hence its effect can be practically neglected compared to bicarbonate buffer system(pKa=6.1). The normal bicarbonate level in blood is 22-26 meq/L. The effective pH of the buffered solution can be calculated by the Henderson-Hasselbalch equation as:
pH = pKa + log10 ( [HCO3] / 0.03 x pCO2)
The general equation for the action of bicarbonate buffer is:
CO2 + H2O…
requirement doing an internship in the office of Arise for social Justice. My time period was during the middle of May, through the end of June, and then completed during the month of August. Looking at my time working with Arise, I aim to discuss the following issues of observation through the perspective of a trans person, an environmental activist, and a person with physical and mental disabilities. In addition to describing what Arise does, what it believes, and how it goes about conducting…
seeds in the same place in the room ensures that the amount of light the seed receives is the same for each experiment.
Method and Collection of Sufficient Relevant Data
The apparatus, chemicals and solutions:
Soil – 700g
7x Trays - 10cm x 10cm x 5cm
35 mustard seeds
Distilled water – 175ml
1. Measure and record the length of the seed.
2. Add 20g of soil to the tray
3. Depending on the pH of the soil…
It is essential for pharmacists to be able to predict the theoretical rate kinetics of pharmaceutical products in order to determine its shelf life. As the shelf life is defined by (t90), which is the availability of greater or equal to 90% of the drug, it is important to discover the rate of degradation of a drug to ensure that the patients receive an adequate dose of the drug. In this experiment, the stability of the active ingredient of Aspro Clear is investigated to identify the rate of…