If I shake my can of soda, it will release more molecules into the airspace. The pressure of that can is directly proportional to the mole number of molecules in that space. Avogadro’s Law Example – When building a new internet site, it is desirable to attain and place a copyright notice on your web page so as to announce your ownership towards any perform that is displayed here from time to time. Examples of Avogadro’s Law Avogadro’s Law helps to determine how much of a substance exists inside a container if the pressure and temperature remain the same (only the amount of gas changes). This concept was incredibly important to the development of modern day chemistry. Avogadro's Law is the relation which states that at the same temperature and pressure, equal volumes of all gases contain the same number of molecules.The law was described by Italian chemist and physicist Amedeo Avogadro in 1811.

What is Avogadro's Law?

1 Answer

Avogadro's law states that, at the same temperature and pressure, equal volumes of all gases have the same number of molecules.

Explanation:

Another statement is, 'Volume is directly proportional to the number of moles.'

The volume increases as the number of moles increases. It does not depend on the sizes or the masses of the molecules.

#V ∝ n#, where #V# is the volume, and #n# is the number of moles.

#V/n = k#, where #k# is a proportionality constant.

We can rewrite this as

#V_1/n_1 = V_2/n_2#

Equal volumes of hydrogen, oxygen, or carbon dioxide contain the same number of molecules.

STP is 0 °C and 1 bar.

One mole of an ideal gas occupies 22.71 L at STP. Thus, its molar volume at STP is 22.71 L

Example Problem

A 6.00 L sample at 25.0 °C and 2.00 atm contains 0.500 mol of gas. If we add 0.250 mol of gas at the same pressure and temperature, what is the final total volume of the gas?

Solution

The formula for Avogadro's law is:

#V_1/n_1 = V_2/n_2#

#V_1 = '6.00 L'; n_1 = '0.500 mol'#

#V_2 = ?; color(white)(mml)n_2 = '0.500 mol + 0.250 mol = 0.750 mol'#

#V_2 = V_1 × n_2/n_1#

#V_2 = '6.00 L' × (0.750 color(red)(cancel(color(black)('mol'))))/(0.500 color(red)(cancel(color(black)('mol')))) = '9.00 L'#

Related questions

where:

Avogadro's Law Examples Problems

V is the volume of the gas.

n is the amount of substance of the gas.

k is a proportionality constant.

Avogadro’s law also means the ideal gas constant is the same value for all gases, so:

constant = p₁V₁/T₁n₁ = P₂V₂/T₂n₂

Avogadro's Law Sample Problem Pdf

V₁/n₁ = V₂/n₂

V₁n₂ = V₂n₁

where p is the pressure of a gas, V is volume, T is temperature, and n is number of moles

Examples of Avogadro’s law in Real Life Applications

Avogadro's Law Worksheets With Answers

• As you blow up a football, you are forcing more gas molecules into it. The more molecules, the greater the volume. The basketball inflates.
• As you blow up a balloon, you are forcing more gas molecules into the balloon which would increase the balloon volume and cause them to balloon inflate.
• A flat tire takes up less space than an inflated tire, because it contains less air.