▁is ▁defined ▁as ▁a ▁strong ▁electro ly te . ▁Similar ▁logic ▁applies ▁to ▁a ▁weak ▁electro ly te . ▁Str ong ▁ac ids ▁and ▁bases ▁are ▁good ▁examples ▁such ▁as ▁H Cl , ▁and ▁H 2 SO 4 . ▁These ▁will ▁all ▁exist ▁as ▁ ions ▁in ▁an ▁a que ous ▁medium . ▁ ▁G ases ▁The ▁degree ▁of ▁dis soci ation ▁in ▁g ases ▁is ▁denoted ▁by ▁the ▁symbol ▁α ▁where ▁α ▁refers ▁to ▁the ▁percentage ▁of ▁gas ▁mole cules ▁which ▁dis soci ate . ▁Vari ous ▁relationships ▁between ▁K p ▁and ▁α ▁exist ▁depending ▁on ▁the ▁sto ichi ometry ▁of ▁the ▁equation . ▁The ▁example ▁of ▁d init ro gen ▁t etro x ide ▁( N 2 O 4 ) ▁dis soci ating ▁to ▁nit ro gen ▁dio x ide ▁( NO 2 ) ▁will ▁be ▁taken . ▁N 2 O 4 ▁▁ 2 NO 2 ▁ ▁If ▁the ▁initial ▁concentration ▁of ▁d init ro gen ▁t etro x ide ▁is ▁ 1 ▁mole ▁per ▁lit re , ▁this ▁will ▁decrease ▁by ▁α ▁at ▁equilibrium ▁giving , ▁by ▁sto ichi ometry , ▁ 2 α ▁mol es ▁of ▁NO 2 . ▁The ▁equilibrium ▁constant ▁( in ▁terms ▁of ▁pressure ) ▁is ▁given ▁by ▁the ▁equation ; ▁ ▁Where ▁p ▁represents ▁the ▁partial ▁pressure . ▁Hence , ▁through ▁the ▁definition ▁of ▁partial ▁pressure ▁and ▁using ▁p T ▁to ▁represent ▁the ▁total ▁pressure ▁and ▁x ▁to ▁represent ▁the ▁mole ▁fraction ; ▁ ▁The ▁total ▁number ▁of ▁mol es ▁at ▁equilibrium ▁is ▁( 1