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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: CelticKhemist2000 on December 05, 2020, 11:58:57 PM

Title: Standard Molar Enthalpy of Combustion
Post by: CelticKhemist2000 on December 05, 2020, 11:58:57 PM

I'm having trouble understanding why there's a "1/2" next to the O₂ in the reaction equation? I thought it meant just only 1 oxygen atom changed from it's diatomic gaseous form reacted with the H? But the product still says H₂O so there's 2O to ever H? I'm just a little confused as to what "1/2" means.

Title: Re: Standard Molar Enthalpy of Combustion
Post by: Borek on December 06, 2020, 03:45:13 AM

Quote from: CelticKhemist2000 on December 05, 2020, 11:58:57 PM

But the product still says H₂O so there's 2O to ever H?

Huh? ₂ in H₂O doesn't refer to O, but to H.