experiment tested why mixing reactants in different mole ratios affected the amount of the product and the amount of each reactant that is left over.
To solve the problem, the lab contained reacting sodium bicarbonate(baking soda) and acetic acid(vinegar) in different ratios and seeing if the product changed. The data suggests that the higher ratio of baking soda to vinegar creates the most product. For the ratio 3:1, the final grams of sodium acetate(product) was 0.09, the product…
Zinc (Zn), iodine (I2), acetone (C3H6O), acetic acid (C2H4O2) and zinc iodide (ZnI2) were used to conduct this experiment in order to confirm the validity of the law of conservation of mass as well as to use Stoichiometry to calculate the reaction between zinc and iodine.
There are some precautions that one must consider before handling and using these specific chemicals. All of the chemicals used impose at the minimal, hazard to skin and eyes. However, acetic acid in particular can be very…
Antiperspirant/deodorants are used to reduce underarm wetness and control body odor. These products are made by blending active ingredients with waxes, oils, and silicones and molding the mixture into stick form.
Body odor is primarily generated in the area under the arms where there is a high concentration of sweat glands. While sweat from these glands is initially odorless, it contains natural oils, called lipids that provide a growth medium for bacteria living on the skin. These bacteria…
After the mass of the crude product was measured, the recrystallization was done for more purification; the solution looked clear prior to it’s cooling to room temperature. After the solution cooled to the room temperature and vacuum filtration was done again on recrystallization product, the solution was a white shiny with crystalline solid appearance. The melting point of the Meta-Methyl nitrobenzoate product formed was at 76.2 ‐ 78°C. The appearances of the TLC for the crude product, starting…
The expression "SN1" is the abbreviation of "unimolecular nucleophilic substitution reaction", one of the most common reactions in organic chemistry. As a fundamental reaction type, the mechanism of SN1 reaction has long been clear to the researchers, and the rate of the reaction concluded from the mechanism is quite simple. According to the mechanism, the rate of an "ideal" SN1 reaction is only proportional to the concentration of the substrate, which can be expressed as the following formula:…
Isolation of Chlorophyll and Beta-Carotene from Plant Leaves
Yokoyama Yuri B1 (A0142349E)
a) To separate beta-carotene and chlorophyll via column chromatography.
b) To analyse the contents of the plant extract as well as the separated beta-carotene and chlorophyll via thin layer chromatography (TLC)
c) To analyse the absorption peaks of both beta-carotene and chlorophyll using UV-Vis spectroscopy
Fig 1. UV-Vis spectroscopy results
for S2 (Beta-Carotene extract)
Meta description: Potassium phosphate is a supplement that is used to treat or prevent hypophosphatemia.
Potassium phosphate is an injection supplement used as a preventative in order to remedy low phosphorus in the blood.
Potassium phosphate is an intravenous injection used to prevent or treat hypophosphatemia, low phosphorus in the blood, through the use of a concentrated solution mixture of monobasic and dibasic potassium.
Phosphorus occurs naturally in every cell in the body and…
Determining Value for Money of Different Brands of Vinegar
Aim – To compare the amount of acetic acid found in two different brands of vinegar to see which is the most cost effective.
• Safety Glasses
• Hair Tie (If appropriate)
• 50mL burette
• 250mL conical flask
• 2 x Beaker
• Measuring Cylinder
• Standard solution of Sodium Hydroxide, NaOH(aq)
• Two different brands of vinegar
• Phenolphthalein Indicator
• A clean white tile
• Distilled water
3.7 ANALYTICAL METHOD FOR ESTIMATION OF RALOXIFENE HYDROCHLORIDE IN HIGH PERFORMANCE LIQUID CHROMATOGRAPHY USING ACETONITRILE:0.05M AMMONIUM ACETATE (33:67) AS MOBILE PHASE
3.7.1 For Plain Drug Estimation
Mode Reverse Phase HPLC
Detector UV Spectrophotometer
Mobile Phase 0.05M Ammonium Acetate (pH 4): Acetonitrile
Sample Raloxifene Hydrochloride in Methanol HPLC
Flow Rate 1 mL/min
Injection Volume 20µL
Retention Time 4.6 min
A stock solution of Raloxifene Hydrochloride was…
Pantoprazole undergoes hepatic first pass metabolism , hence it shows poor bioavailability. The aim of study was to prepare and evaluate mucoadhesive tablet of pantoprazole using tamarind seed powder in combination with HPMC, magnesium oxide, and talc. Tamarind seed powder is used for dissolution enhancer (improve dissolution).
Method: Six Formulations were developed with varying concentration of polymer like HPMC and other excipients like tamarind seed powder, magnesium oxide and lactose…