Homework Help: chemistry

Posted by Jen on Sunday, March 28, 2010 at 5:38pm.

Hydrogen and oxygen react according to the equation: 2H2 + O2 -> 2H2O.

According to Avogadro's law, how many liters of hydrogen are required to react with 2.0 L of oxygen at STP?

How do you set this equation up and find the answer???

chemistry - DrBob222, Sunday, March 28, 2010 at 5:45pm
When using volume only with gases, one can ignore going through the conversion to mols and just take the ratio as the volumes in the equation. You read the equation this way. 2 volumes of hydrogen react with 1 volume of oxygen. Therefore, 2.O L of oxygen at STP would react with ?? L of hydrogen at STP

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