Gas idealen konstante unibertsala bariable desberdinak lotzen dituen konstante fisiko bat da; bereziki bolumena, presioa, tenperatura eta materia kantitatea lotzen ditu.
Gehienetan konstantea gas idealen ekuazioan erabiltzen da. (R)
P V = n R T {\displaystyle PV=nRT}
Gas idealaren modeloan molekulen bolumena zero dela onartzen da, eta partikulak euren artean interakzionatzen ez dutela.
R-ren balioa Gasen konstante unibertsala ez da funtsezko konstante bat, arrazoi honegatik, unitate sistema praktikoenak hartuta, honek dira R-ren balioak:
R = { = 0 , 08205746 [ a t m ⋅ L m o l ⋅ K ] = 62 , 36367 [ m m H g ⋅ L m o l ⋅ K ] = 1 , 987207 [ c a l m o l ⋅ K ] = 8 , 314472 [ J m o l ⋅ K ] {\displaystyle R={\begin{cases}=0,08205746\mathrm {\left[{\frac {atm\cdot L}{mol\cdot K}}\right]} \\=62,36367\mathrm {\left[{\frac {mmHg\cdot L}{mol\cdot K}}\right]} \\=1,987207\mathrm {\left[{\frac {cal}{mol\cdot K}}\right]} \\=8,314472\mathrm {\left[{\frac {J}{mol\cdot K}}\right]} \\\end{cases}}}
R = 8 , 314472 J / ( K ⋅ m o l ) {\displaystyle R=8,314472\quad \mathrm {J/\left(K\cdot mol\right)} } R = 8 , 314472 ⋅ 10 − 3 k J / ( K ⋅ m o l ) {\displaystyle R=8,314472\cdot 10^{-3}\ \quad \mathrm {kJ/\left(K\cdot mol\right)} } R = 0 , 08205746 L ⋅ a t m / ( K ⋅ m o l ) {\displaystyle R=0,08205746\quad \mathrm {L\cdot atm/\left(K\cdot mol\right)} } R = 8 , 205746 ⋅ 10 − 5 m 3 ⋅ a t m / ( K ⋅ m o l ) {\displaystyle R=8,205746\cdot 10^{-5}\quad \mathrm {m^{3}\cdot atm/\left(K\cdot mol\right)} } R = 8 , 314472 c m 3 ⋅ M P a / ( K ⋅ m o l ) {\displaystyle R=8,314472\quad \mathrm {cm^{3}\cdot MPa/\left(K\cdot mol\right)} } R = 8 , 314472 L ⋅ k P a / ( K ⋅ m o l ) {\displaystyle R=8,314472\quad \mathrm {L\cdot kPa/\left(K\cdot mol\right)} } R = 8 , 314472 m 3 ⋅ P a / ( K ⋅ m o l ) {\displaystyle R=8,314472\quad \mathrm {m^{3}\cdot Pa/\left(K\cdot mol\right)} } R = 62 , 36367 L ⋅ m m H g / ( K ⋅ m o l ) {\displaystyle R=62,36367\quad \mathrm {L\cdot mmHg/\left(K\cdot mol\right)} } R = 62 , 36365 L ⋅ T o r r / ( K ⋅ m o l ) {\displaystyle R=62,36365\quad \mathrm {L\cdot Torr/\left(K\cdot mol\right)} } R = 83 , 14472 L ⋅ m b a r / ( K ⋅ m o l , ) {\displaystyle R=83,14472\quad \mathrm {L\cdot mbar/\left(K\cdot mol,\right)} } R = 1 , 987 c a l / ( K ⋅ m o l ) {\displaystyle R=1,987\quad \mathrm {cal/\left(K\cdot mol\right)} } R = 6 , 132440 l b f ⋅ f t ⋅ K − 1 ⋅ g − m o l − 1 {\displaystyle R=6,132440\quad \mathrm {lbf\cdot ft\cdot K^{-1}\cdot g-mol^{-1}} } R = 10 , 73159 f t 3 ⋅ p s i ⋅ ∘ R − 1 ⋅ l b − m o l − 1 {\displaystyle R=10,73159\quad \mathrm {ft^{3}\cdot {psi}\cdot {}^{\circ }R^{-1}\cdot lb-mol^{-1}} } R = 0 , 7302413 f t 3 ⋅ a t m ⋅ ∘ R − 1 ⋅ l b − m o l − 1 {\displaystyle R=0,7302413\quad ft^{3}\cdot atm\cdot {}^{\circ }R^{-1}\cdot lb-mol^{-1}} R = 2 , 2024 f t 3 ⋅ m m H g ⋅ K − 1 ⋅ m o l − 1 {\displaystyle R=2,2024\quad ft^{3}\cdot mmHg\cdot K^{-1}\cdot mol^{-1}} R = 8 , 314472 ⋅ 10 7 e r g ⋅ K − 1 ⋅ m o l − 1 {\displaystyle R=8,314472\cdot 10^{7}\quad erg\cdot K^{-1}\cdot mol^{-1}} R = 1716 f t ⋅ l b ⋅ ∘ R − 1 ⋅ s l u g − 1 {\displaystyle R=1716\quad ft\cdot lb\cdot {}^{\circ }R^{-1}\cdot slug^{-1}\;} R = 286 , 9 N ⋅ m ⋅ k g − 1 ⋅ K − 1 {\displaystyle R=286,9\quad N\cdot m\cdot kg^{-1}\cdot K^{-1}} R = 286 , 9 J ⋅ k g − 1 ⋅ K − 1 {\displaystyle R=286,9\quad J\cdot kg^{-1}\cdot K^{-1}\;} R = 0 , 08205746 d m 3 ⋅ a t m / ( K ⋅ m o l ) {\displaystyle R=0,08205746\quad dm^{3}\cdot atm/\left(K\cdot mol\right)} R = 8 , 314472 ⋅ 10 − 5 m 3 ⋅ b a r / ( K ⋅ m o l ) {\displaystyle R=8,314472\cdot 10^{-5}\quad m^{3}\cdot bar/\left(K\cdot mol\right)} Ikus, gainera Erreferentziak Kanpo estekak 
