4800 ppb CCl4 in air를 mg/m3 농도로 환산

4800 ppb CCl4 in air를 mg/m3 농도로 환산

---

4800 ppb CCl4 in air = (4800 mol CCl4 / 10^9 mol air) × 10^9

( 참고: ppb 농도 https://ywpop.tistory.com/2657 )

( 참고: 기체 ppm https://ywpop.tistory.com/5494 )

 

 

 

CCl4의 몰질량 = 153.82 g/mol 이므로,

4800 mol × (153.82 g/mol) = 738336 g

= 738336000 mg CCl4

( 참고: n=W/M https://ywpop.tistory.com/7738 )

( 1 g = 1000 mg )

 

 

 

STP 조건에서,

10^9 mol × (22.4 L/mol) = 22.4×10^9 L

= 22.4×10^6 m3 air

( 참고: 몰부피 https://ywpop.tistory.com/8321 )

( 1 m3 = 1000 L )

 

 

 

mg/m3 농도를 계산하면,

738336000 mg / (22.4×10^6 m3)

= 32.96 mg/m3

 

 

 

답: 33 mg/m3

 

 

 

 

[키워드] standards for CCl4 in air at 12.6 mg/m3 CCl4 found in a sample is 4800 ppb, CCl4 12.6 mg/m3 4800 ppb