Essays on End Point

Aims and Objectives of the Experiment

The main objective of this experiment is to determine the concentration of different substances. This is achieved by determining the end point(s) of different titrations using the automated potentiometric titrator. These points are known as equivalence points. The units of measurement are the standard units used in titrations i.e. Molarity (moles/liter) of substances used while the quantities of these substances are measured in mL (milliliter).

Theory and Principles

Potentiometric titration is a volumetric method which measures the potential between two electrodes, namely reference and indicator, with the change in the volume of the reagent that is added, known as the titrant. ...

Ray WA, Chung CP, Murray KT, Hall K, Stein C. Prescription of Long-Acting Opioids and Mortality in Patients With Chronic Noncancer Pain. JAMA. 2016;315(22):2415-2423. doi:10.1001/jama.2016.7789.

Prescription of Long-Acting Opioids and Mortality in Patients With Chronic Noncancer Pain Wayne A. Ray, PhD1; Cecilia P. Chung, MD, MPH2; Katherine T. Murray, MD2,3; Kathi Hall, BS1; C. Michael Stein, MB, ChB2,3 [+] Author Affiliations JAMA. 2016;315(22):2415-2423. doi:10.1001/jama.2016.7789.

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Abstract ABSTRACT | INTRODUCTION | METHODS | RESULTS | DISCUSSION | CONCLUSIONS | ARTICLE INFORMATION | REFERENCES Importance  Long-acting opioids increase the risk of unintentional overdose deaths but also may increase ...

There are various ions that are responsible for the acidic or basic nature of a substance. The hydrogen ions and hydroxide ions are both responsible for the acidic and basic nature of substance respectively. A neutral substance contains equal number of hydrogen ions (H+) as well as hydroxide ions (OH-) An acid is substance that dissolve and donate hydrogen ions leading to more number of hydrogen ions in a solution. A substance that dissolves water and release hydroxide ions is considered a base. A base has more number of hydroxide ions as compared to hydrogen ions hence basic. Alkalinity ( ...