High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa ) to about 60,000 kpa (60,000,000 pa ). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 2.70×108 pa , what is its running pressure in torr? express the pressure numerically in torr.

We have to convert running pressure in an HPLC procedure from Pascal unit to Torr.

The answer is: 2.025 X 10⁶ torr.

Both of Pascal and Torr are units of pressure. We know, 1 Pascal is equal to 0.0075 torr.

Hence, 2.70 X 10⁸ Pascal is equal to 0.0075 X 2.70 X 10⁸ torr= 0.02025 X 10⁸ torr=  2.025 X 10⁶ torr.

Explanation:

Pressure of the gas is defined as the force exerted by the particles on the walls of the container. It is expressed in various terms like 'mmHg', 'atm', Pascals , torr etc

All these units of pressure are inter convertible.

We are given:

Pressure of the gas =

Converting this unit of pressure into torr by using conversion factor:

Thus the pressure in torr is