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  • 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_total, p_chloroform and p_acetone as a function of x _acetone.

2.37   Vapour pressures of pure acetone and chloroform at 328 \; K are 741.8 \; mm\; Hg and 638.8 \; mm\; Hg  respectively. Assuming that they form ideal solution over the entire range of composition, plot ptotal, pchloroform, and pacetone as a function of xacetone. The experimental data observed for different compositions of mixture is:

            

100 \times 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

p_{total}                                        632.8    603         579.5     562.1    580.4   599.5   615.5    64.18

 

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

 

Answers (1)

Given data is:             

100 \times 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

p_{total}                                        632.8    603         579.5     562.1    580.4   599.5   615.5    64.18

it has negative deviation from the ideal solution.

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Ankit

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