Question

The graph obtained by taking vapour pressure
(P) of a liquid on y-axis and temperature (T) on
x-axis will be

Answer 1

Answer:

option 3:hyperbola

hyperbola

Answer 2

The graph obtained by taking vapor pressure  (P) of a liquid on y-axis and temperature (T) on  x-axis is hyperbola.

Explanation:

• This graph is understood through attractive force between the molecules where the liquid becomes gas. This molecular attraction is given as heat of vaporization.
• At low temperature, the liquid remains liquid when the temperature increases, the energy of the molecule increases which makes the molecules to escape.
• The vapor pressure as a function of temperature in liquids has an exponential behavior.

• $\mathbf{P}=A \mathrm{e}^{\left(-\Delta \mathbf{H}_{\mathrm{v}} / \mathbf{R} \mathbf{T}\right)}$

Where,

A =  Experimental constant

ΔHv = Heat of vaporization

R = Gas constant = 8.314 J/(K mol)

T = Temperature