Why mixture does not have fixed melting or boiling point.give 2 reasons
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269
because many elements are present in mixture and every element has its own boiling or melting point
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211
mixture contain different types of substances in different compositions.
these substance may have different melting andboiling point hence the melting and boiling point of a mixture cannot be fixed.
proof: If you heat salt water, the boiling point will exceed 100 Celcius. However there are also impurities can lowers the melting and boiling point during heating. Example, cryolite (Na3AlF6) are added to aluminium oxide when heating to turn it to molten form.
these substance may have different melting andboiling point hence the melting and boiling point of a mixture cannot be fixed.
proof: If you heat salt water, the boiling point will exceed 100 Celcius. However there are also impurities can lowers the melting and boiling point during heating. Example, cryolite (Na3AlF6) are added to aluminium oxide when heating to turn it to molten form.
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