Skip to main content

Standard Hydrogen Electrode and its preparation

Most important question of class-12th (Chemistry)

              Topic- Standard hydrogen electrode            

 (Question)–What is Standard hydrogen electrode?How is it prepared?

(Answer)–Standard hydrogen electrode–
                                  Hydrogen gas at 25°c and one atmospheric pressure in contact of molar (Unit concentration) of hydrogen ions forms standard Hydrogen Electrode. It electrode potential assumed to be Zero.
Standard Hydrogen Electrode

(Method of preparation)

It is an apparatus shows in diagram.A rectangular platinum plate is taken which is coated with platinum p' black. This platinum plate is attached with a platinum wire kept in a glass tube Within the tube the wire is dipped in a small amount of mercury. Platinum plate is surrounded by a glass tube. Which has an inlet for hydrogen gas. Pure hydrogen gas is passed through this inlets at one atmospheric pressure. This electrode is kept in molar concentration of H+ions. In this way standard Hydrogen Electrode is formed.


.....................................................................................
Labels:

Comments

Post a Comment

Please Subscribe and Comments my blog site.

Popular posts from this blog

Dalton's Atomic Theory—(Chemistry)

Dalton's Atomic Theory The theory that' all matter is made up of very tiny indivisible particles (atoms)' is called atomic theory of matter. Dalton's put forward his Atomic Theory of matter in 1808. The various postulates of Dalton's atoAto Theory of matter are as follows: All the matter is made up of very small particles called 'atoms'. Atoms cannot be divided. Atoms can neither be created nor destroyed Atoms are of various kinds. There are as many kinds of atoms as are elements. All the atoms of a given element are identical in every respect, having the same mass, size and chemical properties. Atoms of different elements differ in mass, size and chemical properties. Chemical combination between two elements consists in the joining together of atoms of these elements to form molecules of compounds. Drawbacks of Dalton's Atomic Theory It is now known that some of the statements of Dalton's Atomic Theory of matter are not exactly corre...
Post a Comment
Read more

The sentence//Kinds of sentence (English grammar)

The Sentence— A group of words that makes complete sense is called a Sentence. Example– (1) Birds fly in the air. (2) She writes very well. Phrase A group of words that makes sense but not complete sense. Example– (1) in a great hurry. (2) in the early morning. Kinds of sentence— Declarative Sentence Interrogative Sentence Imperative Sentence Exclamatory Sentence Declarative Sentence— A sentence that states or declares something is called a Declarative sentence. Example- (1) The sun rises in the east. (2) The boys made a noise. Interrogative Sentence– A sentence that asks a question is called Interrogative sentence. Example- (1) Why were you late yesterday ? (2) Have you done your lesson ? Imperative Sentence— A sentence that expresses a command, a request, or a desire is called an Imperative sentence. Example– (1) Amar, shut the door. (2) Please do this just now. Exclamatory Sentence— A sentence that expresses some strong or sudden feeling is call...
Post a Comment
Read more

Is claims responsibility for Niger attack which killed 71

NIAMEY, Dec 13 (AFP) The Islamic state group has claimed responsibility for an attack on an Army camp in Niger which left 71 military personnel dead, the SITE Intelligence group said on Thursday.    Hundreds of jihadists attacked the camp, near the border with Mali with shells and mortars on Tuesday, killed 71, injuring 122 and leaving other missing' according to the Defence Ministry. The attack in Inates in the western Tillaberi region was the deadliest on Nigers military since Islamist militant violence began to spill over from neighbouring Mali in 2015. "The Islamic States West Africa Province (ISWAP) claimed credit for the deadly raid on the Inates military base in Niger, "SITE, which monitors jihadist media, said.
Post a Comment
Read more