Question

Ello______♡



☺️State Avogadro's law.​

Answer 1

ANSWER✔

$\large\underline\bold{AVAGADRO'S \:LAW,}$

$\large\underline\red{\bold{Law}}$

✯ it states that at constant pressure and temperature the volume of a gas is proportional to the number of molecules.

• law is related to gas volume to the amount of substance of gas present.
• it is valid for real gases ,(low pressure high temperature).

$\large\underline\bold{FOMULA,}$

$\dashrightarrow \dfrac{v_1}{n_1}= \dfrac{v_2}{n_2}$

$\star\:\: v_1= first\:volume$

$\star\:\: v_2= second\: volume$

$\star\:\: n_1= \: first\:amount\:of\:gas\:(in\:moles)$

$\star\:\: n_2= second\:amount\:of\:gas\:(in\:moles)$

$\dashrightarrow molecules\:weight\:in\:gram\\ \therefore 6.02214076 \times 10^{23}$

$\large\underline\bold{derivation\:of\:formula,}$

✯ as the law states that , volume of a gas is proportional to the number of molecules

$\star\:\: volume\:of\:gas\: \propto\: no.\:of\:molecules \:--\boxed{if\:temperature\:and\:pressure\:remains\:constant.}$

$\star\:\: taking\:volume\:as\:v$

$\star\:\: n\:as\:number\:of\:molecules$

$\dashrightarrow v\propto \: n$

$\dashrightarrow v= k \times n$

$\dashrightarrow \dfrac{v}{n}=k$

$\dashrightarrow \dfrac{v_1}{n_1}= k\:-----{1}$

similarly, for other gas we take,

$\dashrightarrow \dfrac{v_2}{n_2}= k\:--\boxed{2}$

$\therefore solving\:equation\:1\:and\:2.we\:get,$

$\dashrightarrow \dfrac{v_1}{n_1}= \dfrac{v_2}{n_2}$

$\large\underline\bold{LAW\: DISCOVERY,}$

$\star\:\: Law\:was\:discovered\:by\\ \star\:\: \large{Amedeo\:avagadro(1776-1856)}\:\: \star \\ \:in\:year\: 1811.$

$\large\underline\bold{UNDERSTANDING\:LAW\:IN\:SIMPLE\:LANGUAGE,}$

$\red{\text{NOTE :- REFER THE ATTACHMENT FOR THE DIAGRAM, }}$$\red{\text{THE EXAMPLE AND UNDERSTANDING OF THESE LAW IS DEPENDED ON THE DIAGRAM.}}$

$\green{\text{OBSERVE THE DIAGRAM, IN THE DIAGRAM}}$

• We took a container containing nitrogen $N_2$ of 100ml
• now taking the same container volume, and taking other gas for example hydrogen$H_2$ we will fill the container with hydrogen with same amount of gas as in nitrogen, which is 100ml
• therefore , the number of molecules in nitrogen container is one lakh ,
• where in the other container $(H_2)$ it will also be same as in the nitrogen conatiner

✯ REASONS CAN BE,:-

• only if the temperature ,pressure and physical condition are equal in both.
• If the container is in equal volume number of volume

that is,

$\large{\boxed{\bf{star\:\: volume\:of\:gas\propto \: no.\:of\:molecules\:\: \star }}}$

$\pink{\text{NOTE:- ONLY IF TEMPERATURE AND PRESSURE REMAINS CONSTANT.}}$

_________________

Answer 2

Answer:

Avogadro's law, a statement that under the same conditions of temperature and pressure, equal volumes of different gases contain an equal number of molecules. ... The law is approximately valid for real gases at sufficiently low pressures and high temperatures.