Identification and Synthesis of an Unknown Ionic Compound
28th October 2015
The chief objective of this experiment was to identify the unknown compound. The following tests were conducted to eventually establish the identity of the compounded: qualitative solubility tests, anion and cation tests, flame test, and the formation of a precipitate. The physical properties of the unknown ionic compound found that it has no smell and was…
A different type of Japanese bamboo had been studied by Phong et al. (2012). Moso bamboo was harvested and processed using several methods to obtain the fiber. In alkali extraction method, the bamboo was cut into thin slabs with length and thickness of 25 cm and 3 mm, respectively. The slabs were immersed in different concentration NaOH solution (1%, 2%, 3%) at 70 ⁰C for 10 h. This study showed that only 1% NaOH resulted in higher mechanical properties. The roller looser was then used to produce…
Nimodipine 0.02% solution contains the following excipients:
Ethanol 96%, Macrogol 400, sodium citrate, citric acid, Water for Injections Ph. Eur.
These excipients consist of properties that aim towards the proper functionality of Nimotop. They consist of inherent stabilities that cause little or no effect in the stability of the drug and they do not have any acute or chronic toxicity. The excipients are also added into the Nimodipine 0.02% solution to enhance the biological…
Determining the Chemical Formula of Hydrated Copper (Ⅱ) Sulfate Using the Empirical Formula
In this experiment, the molecular formula of hydrated Copper (Ⅱ) Sulfate will be determined.
In order to determine the molecular formula, the empirical formula is needed which is the ratio of moles of one substance to another. In this experiment, it is the ratio of Copper (Ⅱ) Sulfate to water.
The empirical formula can be determined if the moles of the compared substances…
To determine optimal pH value for the hydrolysis of p-NPG by leukocyte GCase, we examined effects of variable pH (4.0-5.5) at a constant substrate concentration (5mM). Figure 1 shows the pH activity curves of leukocyte GCase assayed in the presence and absence of 6 mg per ml Sodium taurocholate. In the absence of the pure sodium taurocholate, the activity in the range of pH 4.0-4.8 was considerably lower. However, in the presence of pure Sodium taurocholate, leukocyte GCase was optimally active…
Title: How does the amount of baking soda affect its reaction with vinegar?
Aim: To find out how different amounts of baking soda (soda bicarbonate) affect the length of its chemical reaction with vinegar (acetic acid).
If the amount of baking soda is increased then the length of its reaction with vinegar will increase because there will be more soda bicarbonate for the acetic acid to react with.
The aim of this experiment is to determine through calculations the concentration of acetic acid content within a common white vinegar.
Apparatus / Materials
Volumetric flask and lid
Volumetric pipette/s (5mL, 20mL)
Place the plastic tray on the electronic scales and press tare to set the wither to zero;
Weigh out 0.7993g of Sodium…
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…
The following is a lesson sequence which modified the above experiment to promote inquiry based learning process.
The aim of the experiment: Students use the change in the colour of red cabbage indicator to classify substances as either acid or base.
Note: This activity may take more than one lessons. On the first lesson, students group, discuss and prepare their experiment. On the second lesson, students will have opportunities to carry out the investigation, then record, process, and evaluate…
Lab Report Concerning Acid-Base Titrations
The purpose of this experiment was to recognize the procedures for conducting acid-base titrations. Each acid-base titration used one solution to analyze another; it also involved the use of an indicator, which denoted the endpoint of the titration. The indicator used was phenolphthalein; it produced a pink hue when the titrations reached their endpoints – between pH 8 and pH 10. The endpoint was reached when the moles of the base being used became…