A the rate of H2O appearance is equal that of O2 disappearance.
B the rate of H2O appearance is twice that of H2 disappearance.
C the rate of H2 disappearance is equal to that of O2 disappearance .
D the rate of O2 disappearance is twice that of H2 disappearance.
E the rate of H2 disappearance is twice that of O2 disappearance.
Which of the following statements would be correct regarding the reaction 2H2 + O2 = 2H2O?
2010-10-13 1:42 am
回答 (2)
2010-10-13 1:45 am
✔ 最佳答案
It's (E), because the "2" in H2 is called a molar ratio. It says that for every 2 parts H2, there is one part O2. So, 2 is twice as much as 1, 4 is twice as much as 2, and so on.
It could be written also as: 4H2 + 2O2 = 4 H2O
This is still balanced and just as accurate, and you can clearly see that hydrogen is consumed twice as much as oxygen is to create water.
Make sense?
參考: I'm a pharmacist and a middle school science mentor.
2010-10-13 1:43 am
e
收錄日期: 2021-04-15 15:23:19
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