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ﻛﻤﻴﺔ ﺍﻟﻤﺎﺩﺓ ﻟﻐﺎﺯ

ﻛﻤﻴﺔ اﻟﻤﺎدة و اﻟﺤﺠﻢ:

ﻗﻴﺎس اﻟﺤﺠﻢ V ﻟﻐﺎز ﻳﻤﻜﻦ ﻣﻦ ﺗﺤﺪﻳﺪ ﻛﻤﻴﺔ اﻟﻤﺎدة n ﻟﻬﺬا اﻟﻐﺎز ﺣﺴﺐ اﻟﻌﻼﻗﺔ اﻟﺘﺎﻟﻴﺔ:

ﺣﻴﺚ V m اﻟﺤﺠﻢ اﻟﻤﻮﻟﻲ ﻟﻠﻐﺎزات و ﻫﻮ ﻻ ﻳﺘﻌﻠﻖ ﺑﻄﺒﻴﻌﺔ اﻟﻐﺎز و ﻳﺮﺗﺒﻂ ﻓﻘﻂ ﺑﺪرﺟﺔ اﻟﺤﺮارة و اﻟﻀﻐﻂ .

ﻓﻲ اﻟﺸﺮوط اﻟﻨﻈﺎﻣﻴﺔ:

  p = 1 atm و : q = 0°C

V m  =V 0  = 22, 4 L .mol 1

ﻛﻤﻴﺔ اﻟﻤﺎدة و اﻟﻀﻐﻂ:

ﻗﻴﺎس اﻟﻀﻐﻂ p ﻟﻐﺎز ﻳﻤﻜﻦ ﻣﻦ ﺗﺤﺪﻳﺪ ﻛﻤﻴﺔ اﻟﻤﺎدة n ﻟﻬﺬا

اﻟﻐﺎز ﺣﺴﺐ ﻋﻼﻗﺔ اﻟﻐﺎزات اﻟﻜﺎﻣﻠﺔ:

ﺣﻴﺚ R ﺛﺎﺑﺘﺔ ﻻ ﺗﺘﻌﻠﻖ ﺑﻄﺒﻴﻌﺔ اﻟﻐﺎز و ﺗﺴﻤﻰ ﺛﺎﺑﺘﺔ اﻟﻐﺎزات اﻟﻜﺎﻣﻠﺔ:

R = 8, 314 J .K 1.mol 1

T درﺟﺔ اﻟﺤﺮارة ﺑﺎﻟﻮﺣﺪة ﻛﻠﻔﻦ:

T (K ) = qC ) + 273

 

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