Calculate the relative molecular mass of a compound

Calculate the relative molecular mass of a compound

 

 

Calculate the relative molecular mass of a compound,

if 7.46 dm3 of the compound in a gaseous state (t = 0 °C, p = 101.3 kPa)

has the mass of 24.73 g.

 

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▶ 참고: relative molecular mass of a compound

[ https://ywpop.tistory.com/13169 ]

 

 

1 dm^3 = 1 L 이므로,

( 참고 https://ywpop.tistory.com/9330 )

7.46 dm3 = 7.46 L

 

 

t = 0 °C, p = 101.3 kPa 조건에서,

즉 t = 0 °C, p = 1 atm 조건에서,

기체 1 mol의 부피 = 22.4 L 이므로,

( 설명 https://ywpop.tistory.com/8321 )

 

기체 7.46 L의 몰수를 계산하면,

7.46 L × (1 mol / 22.4 L) = 0.3330357 mol

 

 

기체의 몰질량을 계산하면,

24.73 g / 0.3330357 mol = 74.26 g/mol

( 설명 https://ywpop.tistory.com/7738 )

 

 

답: 74.26