QUESTION 2-37 Vapour pressures of pure acetone and chloroform at 328 K are 741-8 mm Hg and 632-8 mm Hg respectively- Assuming that they form ideal solution over the entire range of composition- plot Ptotal- Pchloroform and pacetone- The experimental data observed for different compoisition of mixture is-Wline100 - x -acetone - 0 - 11-8 - 23-4 - 36-0 - 50-8 - 58-2 - 64-5 - 72-1 1P acetone - mm Hg - 0 - 54-9 - 110-1 - 202-4 - 322-7 - 405-9 - 454-1 - 521-1 llP chloroform - mm - Hg - 632-8 - 548-1 - 469-4 - 359-7 - 257-7 - 193-6 - 161-2 - 120-7 IWhline array Plot this data also on the same graph paper- Indicate whether it has positive deviation or negative deviation from the ideal solution-

[ x_acetone amp; 0 amp; 11.8 amp; 0.234 amp; 0.360 amp; 0.508 amp; 0.582 amp; 0.645 ...

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Standard XII

Chemistry

Ideal Solutions

QUESTION 2.37...

Question

QUESTION 2.37

Vapour pressures of pure acetone and chloroform at 328 K are 741.8 mm Hg and 632.8 mm Hg respectively. Assuming that they form ideal solution over the entire range of composition, plot $p_{t o t a l}$ , $p_{c h l o r o f o r m}$ and $p_{a c e t o n e}$ . The experimental data observed for different compoisition of mixture is:

$\begin{matrix} 100 x_{a c e t o n e} & 0 & 11.8 & 23.4 & 36.0 & 50.8 & 58.2 & 64.5 & 72.1 p_{a c e t o n e} / m m H g & 0 & 54.9 & 110.1 & 202.4 & 322.7 & 405.9 & 454.1 & 521.1 p_{c h l o r o f o r m} / m m H g & 632.8 & 548.1 & 469.4 & 359.7 & 257.7 & 193.6 & 161.2 & 120.7 \end{matrix}$

Plot this data also on the same graph paper. Indicate whether it has positive deviation or negative deviation from the ideal solution.

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Solution

$\begin{matrix} x_{a c e t o n e} & 0 & 11.8 & 0.234 & 0.360 & 0.508 & 0.582 & 0.645 & 0.721 p_{a c e t o n e} / m m H g & 0 & 54.9 & 110.1 & 202.4 & 322.7 & 405.9 & 454.1 & 521.1 p_{c h l o r o f o r m} / m m H g & 632.8 & 548.1 & 469.4 & 359.7 & 257.7 & 193.6 & 161.2 & 120.7 p_{t o t a l} & 632.8 & 603.0 & 579.5 & 562.1 & 580.4 & 599.5 & 615.3 & 64.18 \end{matrix}$

Since, the plot $p_{t o t a l}$ dips downwards, the solution shows negative deviation from Raoult's law.

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Similar questions

Q. Vapour pressures of pure acetone and chloroform at

328 K

are

741.8 m m H g

and

632.8 m m H g

respectively. Assuming that they form ideal solution over the entire range of composition, plot

p_{t o t a l}, p_{c h l o r o f o r m}

, and

p_{a c e t o n e}

as a function of

x_{a c e t o n e}

. The experimental data observed for different compositions of mixture is:

$100 x x_{a c e t o n e}$	$0$	$11.8$	$23.4$	$36.0$	$50.8$	$58.2$	$64.5$	$72.1$
$P_{a c e t o n e} / m m H g$	$0$	$54.9$	$110.1$	$202.4$	$322.7$	$405.9$	$454.1$	$521.1$
$P_{c h l o r o f o r m} / m m H g$	$632.8$	$548.1$	$469.4$	$359.7$	$257.7$	$193.6$	$161.2$	$120.7$

Plot this data also on the same graph paper. Indicate whether it has positive deviation or negative deviation from the ideal solution.

Vapour pressure of pure acetone and chloroform at 328 K are 741.8 mm Hg and 632.8 mm Hg respectively. Assuming that they form ideal solution over the entire range of composition, plot p_total’ p_chloroform’ and p_acetone as a function of x_acetone. The experimental data observed for different compositions of mixture is.

100 ×x_acetone	0	11.8	23.4	36.0	50.8	58.2	64.5	72.1
p_acetone/mm Hg	0	54.9	110.1	202.4	322.7	405.9	454.1	521.1
p_chloroform/mm Hg	632.8	548.1	469.4	359.7	257.7	193.6	161.2	120.7

Q. The vapour pressure of a solution of the liquids A

(P^{0} = 80 m m o f H g a n d X_{A} = 0.4)

and B

(P^{0} = 120 m m o f H g a n d X_{B} = 0.6)

is observed to be 100 mm of Hg. It shows that the solution exhibits:

Q. Acetone & chloroform form a non ideal solution. If 116 gm of acetone is mixed with 239 gm of chloroform & their vapour pressures in pure state at 298 K are 360 torr &300 torr respectively then what would be vapour pressure of the above solution at 298 K.

Question 25
On the basis of information given below mark the correct option. Information On adding acetone to methanol some of the hydrogen bonds between methanol molecules break.
(a) At specific composition methanol-acetone mixture will form minimum boiling azeotrope and will show positive deviation from Raoult's law
(b) At specific composition methanol-acetone mixture will form maximum boiling azeotrope and will show positive deviation from Raoult's law
(c) At specific composition methanol-acetone mixture will form minimum boiling azeotrope and will show negative deviation from Raoult's law
(d) At specific composition methanol-acetone mixture will form maximum boiling azeotrope and will show negative deviation from Raoult's law

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xacetone011.80.2340.3600.5080.5820.6450.721pacetone/mm Hg054.9110.1202.4322.7405.9454.1521.1pchloroform/mm Hg632.8548.1469.4359.7257.7193.6161.2120.7ptotal632.8603.0579.5562.1580.4599.5615.364.18 Since, the plot ptotal dips downwards, the solution shows negative deviation from Raoult's law.