MOLECULAR FORMULA DEFINITION
A formula which tells the actual number of atoms present in a molecule of a substance is known as molecular formula.
Examples: H2O2 and C6H12O6 are the molecular formulas of hydrogen peroxide and glucose respectively.
A formula which tells the actual number of atoms present in a molecule of a substance is known as molecular formula.
Examples: H2O2 and C6H12O6 are the molecular formulas of hydrogen peroxide and glucose respectively.
Diffusion of Gases: 1. The spontaneous mixing of molecules of different gases by random motion and collision until the mixture becomes homogeneous is called diffusion of gases. 2. Molecules of more than one gas are involved. 3. Molecules of lighter gases diffuse fastly. Effusion of Gases: 1. The escaping of one by one gas molecules…
A formula which tells the relative number of atoms present in a compound is known as empirical formula. Examples: NaCl, HO and CH2O are the empirical formulas of sodium chloride, hydrogen peroxide and glucose respectively. Determination of Empirical Formula for Organic Compounds: To determine empirical formula percentage of each element present in a compound is…
Introduction: In 1787, Charles found a relationship between volume and temperature of gases. He announced this relationship in the form of a law known as Charles’ law: Definition: “Volume of a given mass of a gas is directly proportional to the absolute temperature at constant pressure.” Mathematical Charles Law Formula: Another Statement for Charles’ Law:…
The volume of one mole of an ideal gas at standard temperature and pressure is called molar volume of a gas and is equal to 22.414 dm3 at STP (Standard temperature & pressure) & 24 dm3 at RTP (Room temperature & pressure). Explanation: At standard temperature and pressure: 2 g of hydrogen (H2) = 1…
When a liquid is heated, the kinetic energy of its molecules increases in other words the temperature increases as well as the rate of vaporization increases. When the kinetic energy of the molecules becomes maximum i.e., boiling point is reached any further heating at this stage will not increase the temperature rather heat will only…
The pure solids or crystalline solids melt sharply. The temperature remains constant at its melting point until all the solid melts. There are some solids which pass through turbid state before melting. These turbid phases are called liquids crystals because they can flow as liquids. They have the properties like liquids as surface tension, viscosity…