Principles of pH metry

ISBN-13: 9786206739470 / Angielski / Miękka / 52 str.

Pragathi Jogi

Opis

A pH meter is an instrument used to measure acidity or alkalinity of a solution - also known as pH. pH is the unit of measure that describes the degree of acidity or alkalinity. It is measured on a scale of 0 to 14.pH meter, electric device used to measure hydrogen-ion activity (acidity or alkalinity) in solution. Fundamentally, a pH meter consists of a voltmeter attached to a pH-responsive electrode and a reference (unvarying) electrode. The pH-responsive electrode is usually glass, and the reference is usually a silver-silver chloride electrode, although a mercury-mercurous chloride (calomel) electrode is sometimes used. When the two electrodes are immersed in a solution, they act as a battery. The glass electrode develops an electric potential (charge) that is directly related to the hydrogen-ion activity in the solution (59.2 millivolts per pH unit at 25 °C [77 °F]), and the voltmeter measures the potential difference between the glass and reference electrodes.

O autorze

Dr. Pragathi Jogi, was awarded Ph.D. from Osmania Uni, Hyderabad. She has 12 years of teaching experience in reputed institutions. She has published 14 research papers in National/ International Journals and Conferences. Received "Dr. R. K. Agarwal Award" for the best poster presentation in 30th annual conference of Indian Council of Chemists.