2C12H4Cl6 + 23O2 + 2H2O → 24CO2 + 12HCl

Polychlorinated biphenyls (PCB) are

environmental and health hazard.

They break down very slowly in the environment.

The decomposition of PCBs

can be represented by the equation:

2C12H4Cl6 + 23O2 + 2H2O → 24CO2 + 12HCl

a) How many moles of water are needed

to react 10.0 mol PCB?

b) How many grams of HCl are produced

when 15.2 mol H2O react?

c) How many moles of CO2 are produced

when 76.5 g HCl are produced?

d) How many grams of PCB are reacted

when 100.25 g CO2 are produced?

e) How many grams of HCl are produced

when 2.5 kg of PCB react?

---------------------------------------------------

d) How many grams of PCB are reacted

when 100.25 g CO2 are produced?

> C12H4Cl6의 몰질량 = 360.88 g/mol

> CO2의 몰질량 = 44.01 g/mol

2C12H4Cl6 + 23O2 + 2H2O → 24CO2 + 12HCl

100.25 g CO2 생성될 때,

반응한 C12H4Cl6의 질량을

질량비로 계산하면,

( 참고: 질량비로 계산 https://ywpop.tistory.com/22115 )

2C12H4Cl6 : 24CO2

= 2(360.88) : 24(44.01) = ? g : 100.25 g

? = (2(360.88) × 100.25) / (24(44.01))

= 68.504 g C12H4Cl6

답: 68.504 g

[키워드] 화학량론 기준, C12H4Cl6 기준, 질량비로 계산 기준, 질량비로 계산 사전