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Question
Choose the most correct option.
The osmotic pressure of blood is 7.65 atm at 310 K. An aqueous solution of glucose isotonic with blood has the percentage (by volume)________.
Options
5.41 %
3.54 %
4.53 %
53.4 %
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Solution
The osmotic pressure of blood is 7.65 atm at 310 K. An aqueous solution of glucose isotonic with blood has the percentage (by volume) 5.41%.
Explanation:
`"M"_2 = ("W"_2"RT")/(pi "V")`
`"W"_2/"V" = (pi "M"_2)/"RT"`
`= (7.65 "atm" xx 180 "g mol"^-1)/(0.08205 "atm" "dm"^3 "K"^-1 "mol"^-1 xx 310 "K")`
= 54.1 g dm-3 = 5.41 g cm-3 = 5.41%
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