If a liquid compound decomposes at its boiling point, which method(s) will you choose for its purification? It is known that the compound is stable at low pressure, steam volatile and insoluble in water.

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By Vacuum distillation. It ia used when the boiling pt. Of the desired compound is difficult to achieve or will cause the compound to decmpose. The pressure is reduced by using a vacuum pump due to which the liquid bools at a temperature below its boiling point and thus decomposition of liquid is pre...
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By Vacuum distillation. It ia used when the boiling pt. Of the desired compound is difficult to achieve or will cause the compound to decmpose. The pressure is reduced by using a vacuum pump due to which the liquid bools at a temperature below its boiling point and thus decomposition of liquid is prevented. read less
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In a metallic bond, why positive ions are called kernels, not cations?
The kernel is an atom without its valence electrons that are weakly bonded; no electron belongs to one nucleus, valence electrons can move one kernel to another. So it is known as kernel, not cation (have valency).
Shiva Institute of Science and Technology

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