![]() This is a specific form of ideal gas law. It is also named Avogadro’s hypothesis or Avogadro’s principle. What is Avogadro’s Law?Īvogadro’s law is an experimental gas law that states that the volume of a gas is related to the amount of substance gas present in a given sample. Gay Lussac was one of the first scientists to discover this relationship, which led to the derivation of Avogadro’s law. We can say that this is a special case of ideal gas law.Ī derivative of this law is the Pressure-temperature law, which describes the relationship between the pressure and temperature of a certain mass of a gas at a constant volume.Īccording to the law of combining volumes, gases react with each other by means of volume, and they react in simple whole number ratio at constant temperature and pressure conditions. In other words, the ratio between the volumes of the reactant gases and the gaseous products can be given in simple whole numbers. In this equation, P refers to the pressure, t refers to the absolute temperature, and k is a constant. We can give a mathematical expression for this law as follows: ![]() Gay-Lussac’s law describes the varying of the pressure of a particular mass of a gas directly with the absolute temperature of the gas upon constant volume. Summary – Gay-Lussac’s Law vs Avogadro’s Law What is Gay-Lussac’s Law? Gay-Lussac’s Law vs Avogadro’s Law in Tabular Formĥ. Avogadro’s law is an experimental gas law that states that the volume of a gas is related to the amount of substance gas present in a given sample. ![]() The key difference between Gay-Lussac’s law and Avogadro’s law is that Gay-Lussac’s law indicates that the volume of a gas is directly proportional to the temperature of the gas, whereas Avogadro’s law states that the volume of a gas is directly proportional to the number of molecules in the gas. ![]()
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