What Is ATM In Chemistry?

Atm in chemistry refers to atmospheric pressure. It is described as the pressure imposed by the weight of the atmosphere, which has a mean value of 101,325 pascals at sea level (roughly 14.6959 pounds per square inch).

What is the standard pressure in ATM?

Not prevalent beyond the United States. Normal atmospheric pressure is 14.7 psi, which indicates that a column of air one square inch in size ascending from the Earth’s atmosphere to space weighs 14.7 pounds. The definition of normal atmospheric pressure is 1 atmosphere. 1 atm is 14.6956 psi or 760 torrs.

Why do we use ATM in chemistry?

ATM is a unit used to measure pressure in chemistry. The full form of an ATM is “atmosphere.” Our atmosphere has a normal pressure of 1 atm.

Taking everything into account, what is the complete form of 340 atm? Atm refers to atmospheres, a unit of pressure measurement. Thus, 340 Atm denotes the needed pressure to transform the reactants into the products in the reaction mentioned above.

File:Atmospheric Layers.svg - Wikimedia Commons

History Of Standard Pressure

The standard atmosphere was first described as the pressure applied by 760 mm of mercury at 0 °C and standard gravity (gn = 9,80665 m/s2)

It was used as a constant rate for physical and chemical qualities. It was implicit in developing the Celsius temperature scale, which established 100 °C as the boiling point of water at this pressure.

In 1954, the 10th Widespread Conference on Weights and Measures (CGPM) accepted standard atmosphere for general use and confirmed its definition as being precisely 1013250 dynes per square centimeter (101325 Pa).

This described both temperature and pressure regardless of the substance’s qualities. In addition, the CGPM highlighted that some scientists erroneously believed that this concept of the familiar atmosphere applied solely to thermometry.

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