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What is relative lowering of vapour pres...

What is relative lowering of vapour pressure ?

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Relating lowering of vapour pressure : The ratio of lowering of vapour pressure of a solution containing non-volatile solute to the vapour pressure of pure solvent is called relative lowering of vapour pressure.
`"R.L.V.P."=(P_(0)-P_(S))/(P_(0))" "P_(o)-P_(S)` = lowering of vapour pressure
`P_(o)` = Vapour pressure of pure solvent
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