English

How Dose Avogadro'S Law Explain Gay-lussac'S Law of Combining Volumes? - Chemistry

Advertisements
Advertisements

Question

How dose Avogadro's Law explain Gay-Lussac's Law of combining volumes?

Short Note

Solution

According to Avogadro's law under the same conditions of temperature and pressure, equal volumes of different gases have the same number of molecules.

Since substances react in simple ratio by number of molecules, volumes of the gaseous reactants and products will also bear a simple ratio to one another.This what Gay Lussac's Law says.

H2 + Cl2 ? 2HCl

1V 1V 2V(By Gay-Lussacs law)

n molecules n molecules 2n molecules (By Avogadros law)

shaalaa.com
Fundamental Laws of Gases - Avogadro’s Law
  Is there an error in this question or solution?
Chapter 5: Mole concept and Stoichiometry - Exercise 5B [Page 83]

APPEARS IN

Selina Concise Chemistry [English] Class 10 ICSE
Chapter 5 Mole concept and Stoichiometry
Exercise 5B | Q 3.2 | Page 83

RELATED QUESTIONS

State Avogadro's Law.


A gas cylinder contain 12 × 1024 molecules of oxygen gas
If Avogadro's number is 6 × 1023,
calculate :
(i) The mass of oxygen present in the cylinder.
(ii) The volume of oxygen at STP present in the Cylinder[O=16]


State : Avogadro's law


Explain Why?

"The number of atoms in a certain volume of hydrogen is twice the number of atoms in the same volume of helium at the same temperature and pressure."


  1. If 150 cc of gas A contains X molecules, how many molecules of gas B will be present in 75 cc of B? The gases A and B are under the same conditions of temperature and pressure.
  2. Name the law on which the above problem is based.

What is the value of Avogadro's number?


Define or explain the term

Avogadro's number


The gases hydrogen, oxygen, carbon dioxide, sulphur dioxide, and chlorine are arranged in order of their increasing relative molecular masses. Given 8 g of each gas at STP, which gas will contain the least number of molecules and which gas the most?


You have collected

  1. 2 litres of CO2
  2. 3 litres of chlorine
  3. 5 litres of hydrogen
  4. 4 litres of nitrogen and
  5. 1 litre of SO2

under similar conditions of temperature and pressure. Which gas sample will have the least number of molecules? Justify your answers.


A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure. If the number of molecules of hydrogen in the cylinder is X, calculate the number of carbon dioxide molecules in the cylinder. State the law that helped you to arrive at the result.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×