Dissociation constant

Title- Experiment #9- Acid Base Titrations II: Potentiometric and Indicator Titrations Introduction- In this experiment, the reactions of three different acids with a strong base are studied by observing how the pH of the solution changes as the titrant is added. A plot of pH versus amount of titrant added will be constructed. Such a curve is called a pH titration curve. The equivalence point of the reaction will be determined from an analysis of the pH titration curve, and by the use of…

In this case methyl orange can be used as the indicator, pH arc being 3,1...4,4, or methyl red, pH arc being 4,4...6,2. If the pH value is bigger than the arc then the indicators will give a yellow colour to the solution, if smaller then a red colour. Total hardness is the sum of amount of Ca2+ and Mg2+ ions and is determined via complex-titration. Here is the stoichiometric point found by using different complex ions with different colours. The solution is titrated with…

analyze the impacts of glucose on the dissolution of these metal ions. The scope of this project could only focus on the effect of one variable; whether in fact, many other variables such as pH, salinity, and phosphate ions could also affect the dissociation of NMC particles. However, by focusing on one variable at time, a more general hypothesis could be drawn and utilized in the treatment of waste batteries. Background information on how glucose could form complexes with metal ions were…

DISCUSSSIONNN ————————— 1+2.) The results gathered showed that compound A had two spots, lower spot had an rf value of 0.48 and upper spot had an rf value of 0.77, this shows that compound A contained both paracetamol which has an rf value of 0.48 and caffeine which has an rf value of 0.77. Compound B had an rf value of 0.77 which is the same as caffeine therefore compound B contained caffeine. Compound C had an rf value of 0.48 which is the same as paracetamol therefore compound C contained…

A graph is plotted between dielectric constant (εr) versus log frequency for different temperatures 30 0C, 60 0C, 90 0C and 120 0C for Tb3+: SA single crystals. From the Fig12(a) we can conclude that dielectric constant is high at low frequencies which is because of space charge polarization [61] which depends on purity and perfection of the sample. The maximum values of dielectric constant is 6.9, 6.8 for SR and SEST grown Tb3+: SA single crystals respectively,…

3.11.2. Effects of pH The pH is a very important parameter which controls the extent of photoassisted degradation. The effects of pH on degradation of CR were investigated using 15.0 mg of LDH; 1x10-5 M CR solution in the pH range of 4.0 to 11.0, adjusted by addition of either 0.1 M HCl or NaOH. The plot of C/C0 vs. irradiation time of aqueous CR is presented in Fig.12(B). The efficiency of photodegradation of aqueous CR was found to be higher in the acidic medium particularly at pH 4 (~99.7%)…

The first objective of Lab 4 is to use structure activity relationships to predict the properties of an acid and the potency of hallucinogenic compounds. The overall goal of the laboratory is to examine quantitative structure activity relationships (QSAR) in a system that is either chemical or biochemical. The lab is divided into two parts; predicting the acidity of an organic acid, and predicting the hallucinogenicity of derivatives of mescaline. The materials of this lab for both part 1 and…

Graph 4 demonstrates the correlation between the transmittance and concentration levels of KMnO4, in how as the levels of concentration increase, the transmittance decreases. The experiment during week 2 was very similar to week 1 except we used potassium phosphate instead of potassium permanganate. Table 3 demonstrates the effect of wavelength on T% and absorbance. The same equation used for Table 2 was used in Table 3 in order, to calculate the absorbance. The highest absorbance level was…

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…

Fizzy drinks can cause some significant damage to your teeth and general heath. There are three main damaging factors: the sugar content, the acidic properties and the staining effect. The ph of a solution is defined as the hydrogen ion, H+, concentration of said solution (ThoughtCo, 2017). The ph scale ranges from 0-14. Ph 7 being a neutral ph, every ph above being classed as alkali and every ph before being classed as acidic. The mouth has a neutral ph that varies slightly from 6.5-7.5. This…