Thursday, 30 August 2012

Gay-Lussac’s Law

Gay-Lussac's Law Gay-Lussac's Law which is most often referred to as the Pressure law, was founded by a French Chemist & Professor Joseph Louis Gay-Lussac in 1809. Gay-Lussac's Law has also been referred to as Charle's Law, but they are not the same. Gay- Lussacs Law gives the relationship between pressure and temperature when volume and amount are held constant. Gay-Lussac found that for a gas, if the pressure increases, the temperature increases, and if the temperature decreases, the pressure decreases. Based on this Gay-Lussac...

Wednesday, 29 August 2012

Henry's Law

Henry's Law Henry's Law is one of the Gas Laws formulated by a British Chemist William Henry in 1803. It states that " At a constant Temperature the solubility of a Gas in a Liquid (unless it is highly soluble) is DIRECTLY proportional to the Partial Pressure applied to the Gas ". Mathematically Henry's Law can be stated as :- p = kH x c Where, p is the partial pressure of the solute in the gas above the solution, c is the concentration of the solute, kH is a constant known as the Henry's Law constant with the dimensions...

Monday, 27 August 2012

Charle's Law

Charle's Law Charles' Law describes "How Gases tend to expand when heated" and gives the direct relationship of Temperature and Volume of a gas. Charle's Law states that " At a constant Pressure, the Volume of a confined gas is DIRECTLY Proportional to the Absolute Temperature " i.e ,V α T , thus if the Temperature of a gas is Doubled, it's Volume is also Doubled. In a Simple one statement Charle's Law can be stated as " As the Temperature Increases the Gas Expands " This occurs because as the temperature increases,the Gas molecules...

Boyle's Law or Mariotte's Law or Boyle-Mariotte Law

Boyle's Law Boyle's Law states that " At a constant Temperature, the Volume of a confined gas ( gas restricted to certain limits,for eg., gas in a closed system ) is INVERSELY proportional to the Pressure to which it is subjected ". The Law was named after a Chemist and Physicist Robert Boyle , who published the Law in 1662. Robert Boyle studied the Compressibility of Gases in 1660. In his Experiments he observed that "At a fixed Temperature, the Volume of a gas is inversely proportional to the Pressure exerted by the gas." For Eg...

Friday, 24 August 2012

Avogadro's Law & Avogadro's Number

Avogadro's Law Avogadro's law is a Gas Law which states that " Equal Volumes of Gases under the same Temperature and Pressure conditions will contain equal number of particles (atoms, ion, molecules, electrons, etc.) regardless of their Chemical nature and Physical properties " . The law is named after an Italian Chemist Amedeo Avogadro who, in 1811, analysed that the two given samples of an ideal gas , of the same Volume and at the same Temperature and Pressure , contains the same number of molecules . Mathematically the law can...