Define principle behind the functioning of a ph meter, Biology

Assignment Help:

Define Principle behind the functioning of a pH meter?

Principle Hydrogen ions in solution, like other ionic species, conduct an electric current. When a glass electrode is dipped in a solution containing hydrogen ions, a potential difference develops across a very thin glass membrane separating two solutions of different hydrogen ion concentrations - one within and the other outside the glass electrode. A pH meter is an electronic voltmeter that measures this difference of potential and through its internal calibration, converts it to a pH reading which is displayed on a scale.

The scale is normally taken extending from 0 to 14 pH units with a least count of 0.05 pH units or better. A pointing needle moves across the graduated scale and the pH of the solution can be read directly on the scale. These days digital pH meters are becoming more popular as compared to scale - needle instruments. With a review of the principle and functions of the pH meter, we are now ready to get started with the experiments related to pH and buffer solutions.


Related Discussions:- Define principle behind the functioning of a ph meter

How to investigate aortic stenosis by exercise testing, Q. How to investiga...

Q. How to investigate aortic stenosis by Exercise Testing? Exercise testing is relatively contraindicated in patients with aortic stenosis. Its diagnostic accuracy to pick up a

Vitamins, VI T AMINS   Made up of protein or fat. Vitamins r...

VI T AMINS   Made up of protein or fat. Vitamins required in minute quantity for normal metabolism and body functions. Vitamins are supposed to be vital amines

Why are vaccines made of the own disease agent, Why are vaccines made of th...

Why are vaccines made of the own disease agent or of fragments of it? The goal of vaccines is to artificially persuade a specific primary immune response (and the consequent fo

Nutrient cycles, Nutrient Cycles All ecosystems have certain common ba...

Nutrient Cycles All ecosystems have certain common basic features of structure and function. They all have living and non-living components through which there is a flow of en

Explain operational taxonomic units - numerical taxonomy, Explain Operation...

Explain Operational Taxonomic Units - Numerical Taxonomy 1) Then the characters to be used for studying the OTUs are selected. Usually a large number of characters are taken as

Determine the number average molecular weight of bag, 1.  You have two bags...

1.  You have two bags of polymer. Bag A has 10 kgs of polymer with weight average molecular weight of 336.6 kg and Bag B has 20kg of polymer with weight average molecular weight 39

Clone (verb), Clone (verb) is the action of duplicating the genetic materi...

Clone (verb) is the action of duplicating the genetic material within a vector. To clone the piece of DNA, one would insert it into some type of the vector (like, a plasmid) and p

What is dip stick test, What is Dip Stick Test It is a rapid method of ...

What is Dip Stick Test It is a rapid method of detection of Ketone bodies which you can perform easily. Plastic strips impregnated with a buffered mixture of sodium nitropru

Properties of stem cells-pulp tissue revascularization, Properties of Stem ...

Properties of Stem Cells Stem cells are defined by having 3 major properties: 1) They are capable of self-renewal.  2) They divide, some daughter cells give rise to cells

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd