COLLIGATIVE PROPERTIES

BITSAT 2015 Help › Physical Chemistry questions › COLLIGATIVE PROPERTIES

Q1) Which has highest bp?
a) 1% soln C₆H₁₂O₆
b) 1% soln NaCl
c) 1% soln ZnSO₄
d) 1% soln (NH₂)₂CO

Q2) Weight of water in 1L of 2M NaCl soln of density 1.117g/ml is
a) 1117g
b) 1000g
c) 117g
d) 883g

#Chemistry #Physical Chemistry

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6 Answers

3

rocky ·2010-01-24 03:26:37

as it is a colligative property........i think(d)

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3

rocky ·2010-01-24 04:05:22

for(2).....weight of solution =1117g

now weight of NaCl present in sol.=2*58.5=117

so weiht of water present =1117-117=1000g.........ans

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29

govind ·2010-01-24 06:17:37

in the first question i think the answer shud be b
van't hoff factor shud be used to solve this question

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satyajeet ·2010-01-26 01:21:50

ya.... bt as all hav same conc. on wat factor does it depend???

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3

rocky ·2010-01-26 22:38:08

for1..(b)

glucose(a)--no dissociation
(b)----i=2
(c)----i=2
(d)---no dissociation

as Î”T_b proportional to molality and Nacl has lowest molecular weigh among these ..so HIGHEST B.P FOR Nacl

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pratik anand ·2010-02-01 09:57:34

For Q:1 ans is (B) and for Q:2 ans is (B)

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