1.

The V.P. in mm Hg of an aqueous solution obtained by adding 18 g of glucose to 180 gof water at 100^(@)C is

Answer»

<P>`7.60`
`76.0`
759
752.4

Solution :`(p_(1)^(o)-p)/p_(1)^(o)=1 - p/p_(1)^(o) = (W_(2) xx M_(1))/(M_(2) xx W_(1))= (180 xx 18)/(180 xx 180)=1/100` `:. p/760 = 1 - 0.01 = 9.99`
`p=9.99 xx 760 = 752.4 mm`
`(p_(1)^(o) = V.P. "of water at " 100^(@)C = 760 mm)`


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