Q. 515.0( 1 Vote )
Boiling point of methyl alcohol at 1atm is 65 and at 0.5 atm is 48.
To find the boiling point from above figure, we must look for the temperature on x-axis corresponding to pressures given in question.
So, for first pressure i.e. 1atm=760mm of Hg, the corresponding temperature on x- axis is 65. This shown by yellow line in figure.
For the second pressure i.e. 0.5 atm
1atm=760mm of Hg
0.5atm =7600.5 mm of Hg= 375mm of Hg
For 375mm of Hg the corresponding temperature on x-axis is 48. This is shown by orange line in the figure.
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