Amperometric titration

In the second part of the experiment, KHT was added to solutions of different potassium ion concentrations. Similar to the first part, the concentration of HC4H4O6- was calculated through titrations of 0.05 M KCl and 0.1 M KCl solutions with known NaOH concentrations. The total concentration of K+ for the solutions with the common ion is equal to the K+ concentrations from the KCl solutions and the K+ concentration from the KHT itself, which…

As the titration of the two different vinegars were completed by different people, the techniques we used may be different therefore the results may be different than if it was completed by the same person. The experimenter may have misread equipment such as the…

completely, meaning that only some of the H+ ions will be lost. A strong acid will however, will release more of their H+ ions (Tro, 664). This concept is similar for bases; when strong, a base will dissociate more fully, whereas a weak base will not. Titration is a process used to identify an unknown amount of an acid or base in a solution. This is done…

III. Results Table 2: KHP Vs. NaOH Titration data Trial Initial KHP acid Volume (ml) End KHP acid volume (ml) Volume difference (ml) Volume of NaOH Base Used (ml) 1 7 mL 16 mL 9 mL 10.0 mL 2 16 mL 27.5 mL 11.5 mL 10.0 mL 3 27.5 mL 38.5 mL 11 mL 10.0 mL Table 3: Titration of HCl with NaOH Trial Initial NaOH Volume (ml) End NaOH base volume (ml) Volume difference (ml) Volume of HCl acid Used (ml) 1 4.5 mL 14.5 mL 10 mL 10.0 mL 2 30 mL 41.5 mL 11.5 mL 10.0 mL 3 19 mL 31 mL 12 mL 10.0…

3.7.1. Effect of solvent and pH The influence of the solvent on Schiff base ligand L and its metal(II) complexes were studied. The results showed that the optimal solvent for Schiff base ligand L, Co(II), Ni(II) and Cu(II) complexes were CH3CN at λemi =320, 310, 316 and 330 nm, while the optimal solvent for Mn(II) complex was DMF λemi = 312 nm, as shown in Figure 7. The effect pH on the fluorescence intensity of Schiff base ligand L and its metal(II) complexes were investigated between…

Sharmistha Santra A Thermometric Titration Table: (Representing the results obtained from the experiment) Known Acid HCl 1 mol dm-3 (± 0.100) Unknown Acid HCl 0.76 mol dm-3 (± 0.100) Highest Temperature (Time) 28.5 (190s) 28.6 (235s) Lowest Temperature (Time) 22.9 (55s) 22.9 (55s) Sample Calculation for the Unknown Concentration C1V1 = C2V2 1 (190 - 505) = C2 (235 - 505) 1 28.0 = C2 37.0 C2 = 2837 C2 = 0.760 mol dm-3 (±0.0500) Sample Calculation for the amount of mole in Unknown…

Case study one 1. Principle of APTT: Platelet poor plasma (PPP) is incubated at 37 degrees Celsius then phospholipid (cephalin) and a contact activator (e.g.: Kaolin, ellagic acid) are added followed by calcium (all pre-warmed to 37 degrees Celsius). Addition of calcium initiates clotting and timing begins. The APTT measures the time required to regenerate thrombin and fibrin polymers via the intrinsic and common pathways. Reagents:  Platelet poor plasma (PPP)  Surface activator: example;…

Question 1: pH can be described as a measure of acidity or basicity (Alkalinity) of a solution. It is exactly equal in amount to the negative log of the concentration of hydronium(H3O+) ions. Due to the negative log relationship, increased hydronium ions transform to lower pH. When we add it to water, an acid releases hydrogen ion. Hydrogen ions in water unite with the water molecules to form hydronium ions, thereby lowering the pH and increasing the acidity of water. Water exposed to air is…

For the first synthesis reaction, camphene was converted to isobornyl acetate. In the fume hood, a sample of 1.36 g of camphene was added to a 25-mL round-bottomed flask along with a stir bar. To dissolve the camphene, 3.0 mL of glacial acetic acid was added into the flask. The flask was fastened onto a ring stand and immersed in a water bath that was on top of a stir plate. A thermometer wire was placed in the water bath to monitor the temperature throughout the experiment. After the camphene…

9. RESULTS Table 8: Pre Formulation Study S.NO API CHARACTERISATION RESULTS 1 Physical Appearance a white to slightly pink crystalline powder 2 Melting point 138-148 ºC 3 Bulk density 0.396 gm/ml 4 Tapped Density 0.421 gm/ml 5 Carr’s index/Compressibility index 5.94 6 Hausner’s Ratio 1.063 Conclusion: The value of compressibility index above 25%, 15-25%, less than10% indicates poor flowability, optimum flowability and high flowability respectively. As Efaverinz value is <10 so it exhibits…