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Non-Ideal Solutions

a Give two di...

Question

(a) Give two differences between Ideal and non-Ideal solutions.
(b) Find out osmotic pressure of Glucose solutions of $5$ % solution at $25^{o} C$ temperature while molecular mass of Glucose $180$ and $R = 0.0821$ Litre Atmosphere.

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Solution

(a) Differences between Ideal and Non-Ideal solution.
Ideal solution Non-ideal solution
(i) An ideal solution is the solution which obeys Rault's law.
(ii) $Δ H_{m i x i n g} = O$ No change in enthalpy. (i) Solution which do not obey Rault's law.
(ii) $Δ H \neq O$ Change in enthalpy.
(b) According to question
$V = 100 m l = 0.1$ liter
$π = \frac{W_{B}}{M_{B}} \times \frac{R T}{V}$
$= \frac{5}{180} \times \frac{0.0821 \times 298}{0.1}$
$= 6.79$

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Similar questions

5 %

25^{o} C

= 180

R = 0.0821

K^{- 1} m o l^{- 1}

0.5 %

18^{o} C

l i t r e - a t m K^{- 1} m o l^{- 1}

0.05 M

5^{o} C

= 342

= 180

25^{o} C

(i n a t m)

0.5 M

127^{\circ} C

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Ideal solution	Non-ideal solution
(i) An ideal solution is the solution which obeys Rault's law. (ii) $Δ H_{m i x i n g} = O$ No change in enthalpy.	(i) Solution which do not obey Rault's law. (ii) $Δ H \neq O$ Change in enthalpy.