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Water an unusual Liquid
Water is the most common substance on the earth's surface. Water has interesting structure and this accounts for its many unusual properties. One of the most important of these is its ability to dissolve a variety of compounds. It dissolves ionic compounds, many polar inorganic and organic compoun..
Structure of water molecule in the liquid state
In liquid water, water molecules are held together by intermolecular hydrogen bonds. Each oxygen atom can form two hydrogen bonds utilizing both the lone pairs on it. Experimental studies suggest that liquid water consists of aggregates o..
In liquid water, water molecules are held together by intermolecular hydrogen bonds. Each oxygen atom can form two hydrogen bonds utilizing both the lone pairs on it. Experimental studies suggest that liquid water consists of aggregates o..Effect of Temperature and Pressure on States of Matter
When we heat a solid, we add energy to the system increasing the vibration of the particles. Eventually these particles break free from their binding forces and melt. The normal melting point of a crystal is the temperature at which it melts under one atmospheric pressure. Increase in pre..
When we heat a solid, we add energy to the system increasing the vibration of the particles. Eventually these particles break free from their binding forces and melt. The normal melting point of a crystal is the temperature at which it melts under one atmospheric pressure. Increase in pre..2. Boiling points
Carboxylic acids have higher boiling point than aldehydes and ketones and even alcohols of comparable masses. This is due to more extensive association of carboxylic acid molecules through intermolecular hydrogen bonding...
Carboxylic acids have higher boiling point than aldehydes and ketones and even alcohols of comparable masses. This is due to more extensive association of carboxylic acid molecules through intermolecular hydrogen bonding...Points to Remember
Cell is the structural and functional unit of life. The direction in which water flows from one cell to another cell depends on the water potential. Two factors which affect the water potential are the amount of solutes and the external pressure. Due to endosmosis protoplasm expands and ..
Ethane-1,2 diol (Ethylene glycol)
A dihydric alcohol, ethanediol is prepared commercially by acid hydrolysis of epoxy ethane (ethylene oxide..
Influence on the physical state
Hydrogen bonding also influences the physical state of the substances (solid, liquid or gas). Illustration: Both oxygen and sulphur belong to same group but H 2 O is a liquid at ordinary temperature, while H 2 S is a g..
Hydrogen bonding also influences the physical state of the substances (solid, liquid or gas). Illustration: Both oxygen and sulphur belong to same group but H 2 O is a liquid at ordinary temperature, while H 2 S is a g..Physical Properties of Alcohols and Phenols
Alcohols and Phenols consist of two parts, an alkyl/aryl group and a hydroxyl group. The properties of alcohols and phenols are due to the -OH group. The alkyl and aryl groups modify these properties. 1. The lower members of alcohols are colourless, volatile liquids with a characteristic ..
Note
If A and B were at the same height i.e. h=0 then P 2 - P 1 =0 or P 1 = P 2 i.e., Pressure is same at all points inside a liquid lying on the same horizontal plane. If g = 0 at place, then P 2 = P 1 at any two points ins..
Characteristics of Covalent Compounds
Characteristics of Covalent Compounds - 1) Covalent compounds consist of molecules and not ions. The molecules do not have any electric charge on them. The molecules are held together by weak forces called Van der Waal's forces . 2) Covalent compounds are either gases, volatile liqui..
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