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Gaurav Seth 7 years ago
- Parts per million can be defined as the ratio of number of parts of the component to the total number of parts of all components of the solution multiplied by 106.
- It is denoted by ppm.
- It is used to express concentration of a solution where solute is present in trace For instance, concentration of pollutants in water or atmosphere is expressed in terms of g mL–1 or ppm.
- Mathematically,
- For example, let 0.0005g of NaCl be dissolved in 100mL of water then parts per million =
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Yogita Ingle 7 years ago
Term ‘amorphous’ means no form i.e irregular shape.Solids which consists of particles of irregular shape are called amorphous solids.The constituent particles in such solids has only short range order.Glass,rubber and plastics are some examples of amorphous solids.
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Himanshu Arya 7 years ago
Yogita Ingle 7 years ago
The boiling point is the temperature at which the vapor pressure of a liquid equals the external pressure surrounding the liquid. Therefore, the boiling point of a liquid depends on atmospheric pressure. The boiling point becomes lower as the external pressure is reduced.
Posted by Shakshi Rana 7 years ago
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Yogita Ingle 7 years ago
It's a bit complicated in case of ethers. Ethers have lone pair of electrons on their oxygen, which allows them to establish hydrogen bonding with water molecules. Therefore, as long as these lone pairs are sufficiently exposed, ethers are water soluble. This exposure is maximum in case of cyclic ethers, and minimal in case of aliphatic (non-cyclic ethers). Therefore, cyclic ethers tend to be water soluble; whereas, aliphatic ethers are either not soluble at all or have minimal solubility (Aliphatic ethers with up to 3-4 carbons are water soluble to some extent). So, really, the solubility of ethers in water depends on the kind of the ether that we're talking about
But Mostly They are solube as they have lone pair
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