Gas Constant In Kj

If it were me i would just solve it in j mol. If you are using kg mol as the unit for quantity of matter then multiply the value given below by 1000.

Solved A Reaction Has A Dg Value Of 5 1 Kj Mol If The R

R u m gas r 2.

Gas constant in kj. The ideal gas law. Specific heat at const. For air in s i.

The volume v occupied by n moles of any gas has a pressure p at temperature t in kelvin the relationship for these variables p v n r t where r is known as the gas constant is called the ideal gas law or equation of state properties of the gaseous state predicted by the ideal gas law are within 5 for gases under ordinary conditions. Properties of various ideal gases at 300 k gas. The ideal gas law in terms of r is pmrtv where p is the absolute pressure of the gas v is the volume occupied by the gas m is the mass of the gas and t is the absolute temperature of the gas.

Gas constant values based on pressure and volume units this table is based on g moles as the unit for quantity of matter and kelvin as the unit for temperature. This may be indicated by r or r gas. A related factor is the specific gas constant or individual gas constant.

Units air kj 8 3143 kmol k kj j 0 2870 287 0 kg kg k kg k 28 97 kmol r ru m. Login to reply the answers post. Which r value you use depends on this.

For air in english units air ft lbf 1545 4. The universal constant defined in terms of the boltzmann s constant. This constant is specific to the particular gas or mixture hence its name while the universal gas constant is the same for an ideal gas.

The specific heat specific heat capacity at constant pressure and constant volume processes and the ratio of specific heats and individual gas constants r for some commonly used ideal gases are in the table below approximate values at 68 o f 20 o c and 14 7 psia 1 atm. Just make sure your units work out right. For conversion of units use the specific heat online unit converter.

Specific heat at const. The universal gas constant r u the universal gas constant r u appears in the ideal gas law and can be expressed as the product between the individual gas constant r for the particular gas and the molecular weight m gas for the gas and is the same for all ideal or perfect gases. It is the universal gas constant divided by the molar mass m of a pure gas or mixture.

Then you just divide by 1000 to get kj. The pressure volume product rather than energy per temperature increment per particle the constant is also a combination of the constants from boyle s law charles s. The gas constant also known as the molar universal or ideal gas constant is denoted by the symbol r or r it is equivalent to the boltzmann constant but expressed in units of energy per temperature increment per mole i e.

Values of r gas constant value units v p t 1 n 1 8 314 4621 75 j k 1 mol 1 5 189 1019 ev k 1 mol 1 0 082 057 46 14 l atm k 1 mol 1 1 985 8775 34 cal k 1 mol 1 1 985 8775 34 10 3 kcal k 1 mol 1 8 314 4621 75 107 erg k 1 mol 1 8 314 4621 75 l kpa k 1 mol 1 8 314 4621 75 m3 pa k 1 mol 1.

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