화학량론. 2H2 + O2 → 2H2O

화학량론. 2H2 + O2 → 2H2O

 

 

The chemical reaction of hydrogen with oxygen produces water.

2H2(g) + O2(g) → 2H2O(g)

1. How many moles of O2 are required to react with 4.2 moles of H2?

2. How many moles of H2 are needed to react with 4.0 moles of O2?

3. How many moles of H2O form when 5.0 moles of O2 reacts?

 

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▶ 참고: 한계 반응물 https://ywpop.tistory.com/3318

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1. How many moles of O2 are required to react with 4.2 moles of H2?

H2 : O2 = 2 : 1 계수비(= 몰수비) 이므로,

4.2 mol H2와 화학량론적으로 반응하는 O2의 몰수를 계산하면,

H2 : O2 = 2 : 1 = 4.2 mol : ? mol

? = 1 × 4.2 / 2 = 2.1 mol O2

 

 

 

2. How many moles of H2 are needed to react with 4.0 moles of O2?

H2 : O2 = 2 : 1 계수비(= 몰수비) 이므로,

4.0 mol O2와 화학량론적으로 반응하는 H2의 몰수를 계산하면,

H2 : O2 = 2 : 1 = ? mol : 4.0 mol

? = 2 × 4.0 / 1 = 8.0 mol H2

 

 

 

3. How many moles of H2O form when 5.0 moles of O2 reacts?

O2 : H2O = 1 : 2 계수비(= 몰수비) 이므로,

5.0 mol O2 반응하면 화학량론적으로 생성되는 H2O의 몰수를 계산하면,

O2 : H2O = 1 : 2 = 5.0 mol : ? mol

? = 2 × 5.0 / 1 = 10. mol H2O