lowering of vapour pressure of equimolar solution of glucose,sodium chloride and barium nitrate are in the order
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Vant Hoff factor =i
For Barium nitrate,i=3,
2Ba+ No3-
For Nacl,i=2Na+ Cl-
i=2 vant Hoff factor
For glucose vant Hoff factor will be 1
I=1
So higher the vant Hoff factor higher will be the loweirng of vapour pressure.
So barium nitrate will have highest lowering in vapour pressure
Order will be barium nitrate>Nacl>glucose
Thanks
All the very best.
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