Hi Everyone, today I am here with a new topic of mole chemistry. In this topic, you will learn about what is a mole in chemistry, its explanation, and much more. If you guys have any questions regarding this topic then let me know in the comment section.
What Is A Mole in Chemistry?
In Mole Chemistry, One mole of anything has six-point zero two times ten raised to twenty-three atoms or molecules or particles inside in it. 1 mole is defined as the amount of substance that contains the same numbers of atoms/molecules/particles as there are atoms in 12 grams of Carbon-12.
Mathematically: 1mole = 6.022 x 1023 ( Atoms /Molecules /Particles ). If we have to write down the zeros of this number this is how big the number will look. (6.02200000000000000000000000). One mole of anything or compound has these many particles.
The simplest way to understand the concept of what is a mole in chemistry is 6.02 x 1023 atoms /molecules /particles of a substance. That means if we carry a bag containing 6.022 x 1023 hydrogen atoms then we can say it’s 1 mole of hydrogen. Similarly, 6.022 x 1023 molecules of any compound like copper sulphate(In US English Sulfate) are 1 mole of copper Sulphate(In US English sulfate). Mole Chemistry
As we know in mole chemistry the amount of substance that contains the same numbers of atoms/molecules/particles as there are atoms in 12 grams of Carbon-12. Carbon-12 is one of the isotopes of carbon. Now 12 grams of carbon-12 is what was taken as a standard. It is used to compare the number of atoms or molecules or particles present in the substance.
Why We Need the Concept Of Mole?
When we go to the supermarket we always find things by using standard values. In other words, we always take 1kg of rice or 200ml of fruit juice. Fruits are sometimes counted as using the unit dozen. 1 dozen means 12 of something. These are the terms using in our everyday life. Mole chemistry
What if we want to measure something in the terms of tiny particles present in it? Let me explain it in detail.
Can you tell how many gold atoms are present in a normal gold bar? Or can you tell how many water molecules present in a glass of water? You will probably say that it is practically impossible to calculate the numbers of atoms or molecules in these examples. But chemistry has an answer to this as well. That brings us to the idea of mole. Mole Chemistry
What is the Meaning of 1 Mole?
In Mole Chemistry one mole of anything means 6.022 x 1023 particles in it. The symbol of the mole is mol which is the SI unit of the amount of a substance.
Now lets say we take a substance which has a 5 times number of particles here.
5 moles = 5 x 6.022 x 1023
Then we say this is five moles of this substance. If we have eight times of particles here then we write.
8 moles = 8 x 6.022 x 1023
How did Avogadro Find the Mole?
The number 6.022 x 1023 is called Avogadro’s number. Avogadro number is a term used to represent 6.02 x 1023 numbers of any entity. Avogadro number is just a number used to represent quantities. It is similar to how we use the word ‘pair’ for 2 and the word dozen to represent 12. Mole Chemistry
The charge on a mole of electrons is the constant called the Faraday which had been known for some time. In Mole Chemistry If we divide the charge present on a mole of electrons by the charge present on a single electron, we obtain the value of Avogadro’s number of 6.022 x 1023 particles per mole. Mole Chemistry
Compare the Mass of 1 Mole of Gold, Silver and Copper
In mole chemistry, if we take 1 mole of gold, 1 mole of silver, and 1 mole of copper, then all of them have the same numbers of atoms in them. That is 6.022 x 1023 atoms. However, the mass number of each one will be different. That’s because the mass of individual atoms that make up these elements is different.
What is the meaning of one mole?
One mole of anything means 6.022 x 1023 particles in it. The symbol of the mole is mol which is the SI unit of the amount of a substance.
Why is a mole 6.022 x10 23?
The mole is the SI unit of quantity of a “chemical entity,” such as atoms, protons or electrons.1 mole is defined as the amount of substance that contains the same numbers of atoms/molecules/particles as there are atoms in 12 grams of Carbon-12.
1 mol of anything contains 6.022×1023 elementary entities of the substance.
What is the Formula For Mole?
To find the molar mass, we use the molecular formula; to obtain the number of moles, divide the mass of compound by the molar mass of the compound expressed in grams.
How Many Particles are in 1 Mole of Pure Gold?
If we have 1 mole of pure gold then it means it has 6.022 x 1023 particles inside it.
How many Water Molecules Present in a 1 Mole Glass of Water?
If we have 1 mole of pure water will have 6.022 x 1023 water molecules inside it.
Is a Mole Equal to a Gram?
The Avogadro number (6.022 x 1023)was chosen so that the mass of one mole of a chemical compound in grams is numerically equal, for most practical purposes, to the average mass of one molecule of the compound in Daltons. For instance, 1 mole of MgBr2 is 1 gram-molecule of MgBr2 but 3 gram-atoms of MgBr2.
How do I Convert Moles to Grams?
If you want to convert the moles of a substance to grams, you will need to multiply the value of the mole of the substance by its molar mass.
What is the Mass of Pure Gold of 12 Grams? Will it be 12 grams?
No, it will not be 12 grams. In both cases, the number of atoms is the same but the mass of an atom of gold is different from the mass of the atom of Carbon-12. Hence the mass of 1 mole of gold is completely different from the mass of carbon-12.
So 1 mole of gold weighs around 196.97 grams.
What is the Mass of 1 Mole of Water?
One mole of water will have Avogadro’s number of molecules, but it will not weigh 12 grams. The mass of 1 mole of water is 18.015 grams of water.