why are pure substances needed
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To get the accurate melting and boiling point
mishtimg:
please elaborate i have a test tom
thanx in advance]
oh k wait
when there are some impurities in liquid it takes more time to change and vapour state or solid state where as if it is pure we get the exact boiling and melting point... hope so it helps u
eg : water if it is pure we get boiling point as 100 degree Celsius and melting point as 0 degree Celsius if the water is impure they may differ
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when 3 or some impurities in liquid which takes more time to change and vapour state or solid state whereas it is pure we get the exact boiling and melting point!!!!!!!
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