Quick Answer: What Is The Numerical Value Of R?

What is the constant R?


The gas constant R will appear in many contexts as this is a Universal constant that relates energy and temperature.

A pressure times a volume is an energy.

As such, you will also encounter the gas constant R in typical energy units of Joules.


How do you find r in PV nRT?

The ideal gas law is: pV = nRT, where n is the number of moles, and R is universal gas constant. The value of R depends on the units involved, but is usually stated with S.I. units as: R = 8.314 J/mol·K. This means that for air, you can use the value R = 287 J/kg·K.

What is the R value for mmHg?

It relates the four independent properties of a gas at any time. The constant R is called the ideal gas law constant. Its value depends on the units used to express pressure and volume….Learning Objectives.Numerical ValueUnits0.08205L·atm/mol·K62.36L·torr/mol·K = L·mmHg/mol·K8.314J/mol·K

What is the value of R in kJ?

Gas Constant Values based on Energy Unitsg mol Kelving mol RankineJ8.314474.61915kcal0.001985880.00110327kgf.m0.8478400.471022kJ0.008314470.004619158 more rows

What is R constant for bar?

Physical ConstantsconstantsymbolvalueUniversal gas constantR8.314 J K-1 mol-10.08206 L atm mol-1 K-162.36 L torr mol-1 K-10.08314 L bar mol-1 K-113 more rows

What is the numerical value of gas constant R in?

0.0821The numerical value of gas constant R,in lit atm mol−1 K−1 is 0.0821.

What is the value of R in different units?

ConstantValueUnitsR0.08206L·atm/K·molR8.3145J/K·molR1.9872cal/K·molVm22.414L/mol20 more rows

What is the R in PV NRT?

PV. nR. P = Pressure (atm) V = Volume (L) n = moles R = gas constant = 0.0821 atm•L/mol•K T = Temperature (Kelvin) The correct units are essential.

What is the R value for kPa?

If we measure pressure in kilopascals (kPa), volume in litres (L), temperature in Kelvin (K) and the amount of gas in moles (mol), then we find that R = 8.314 and it has the units kPa L K-1 mol-1.

What is the value of R?

The value of R at atm that is at standard atmospheric pressure is R = 8.3144598 J. mol-1. K-1.

What is the value of R in the ideal gas law?

0.082057 LIf you use the first value of R, which is 0.082057 L atm mol-1K-1, your unit for pressure must be atm, for volume must be liter, for temperature must be Kelvin.

What is the R value in joules K mole is?

8.3144598 joules per kelvinThe dimensions of the universal gas constant R are energy per degree per mole. In the metre-kilogram-second system, the value of R is 8.3144598 joules per kelvin (K) per mole.