Every liquid has its tendency to vaporize. Some
liquid are more volatile and some are less, for example Hg has a very less tendency to vaporize so, we use Hg in the manometer for measuring pressure.
Vapour Pressure is the pressure exerted by the vapours in equilibrium with the liquid in pure form at a constant temperature. For an ideal mixture, we can calculate the partial pressure exerted by the vapour, by multiplying its vapour pressure and mole fraction in liquid form. Vapour pressure is a function of temperature, as temperature increases vapour pressure increases and when the vapour pressure becomes equal to surrounding pressure, the corresponding temperature is called Boiling Temperature. So, boiling temperature is also a function of pressure. As pressure increases, boiling temperature increases and with decrease in pressure boiling point decreases.
Pressure cooker is used to cook vegetables, because it increases the temperature the temperature of steam by pressing it and the vegetables cook at high temperature and takes less time.
Vapour Pressure is the pressure exerted by the vapours in equilibrium with the liquid in pure form at a constant temperature. For an ideal mixture, we can calculate the partial pressure exerted by the vapour, by multiplying its vapour pressure and mole fraction in liquid form. Vapour pressure is a function of temperature, as temperature increases vapour pressure increases and when the vapour pressure becomes equal to surrounding pressure, the corresponding temperature is called Boiling Temperature. So, boiling temperature is also a function of pressure. As pressure increases, boiling temperature increases and with decrease in pressure boiling point decreases.
Pressure cooker is used to cook vegetables, because it increases the temperature the temperature of steam by pressing it and the vegetables cook at high temperature and takes less time.
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