bruno102
  • bruno102
The equation, 2 H2(g) + O2(g) arrow 2 H2O(l), represents an equation for a standard formation reaction. True False
Chemistry
katieb
  • katieb
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Photon336
  • Photon336
2H2 + 2O2 ----> 2H2O Ask yourself What does standard formation mean? It's the amount of energy you need to generate, 1 mol of a certain compound if I remember correctly. Now look at the periodic table, all those elements have 0 heat of formation because they occur naturally, and if something occurs naturally it has no heat of formation. Hydrogen gas Oxygen gas Those two are gasses that are naturally occurring so they are 0.
Photon336
  • Photon336
However you must take into account that this must be one mole of a compound formed from its constituents.
Photon336
  • Photon336
Should be H2 + 1/2O2 ---> H2O

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Photon336
  • Photon336
The equation is set up properly but it should always result in one mole produced not two.
bruno102
  • bruno102
Ok thank you, true was the answer I had put down and was right!
Photon336
  • Photon336
No problem, yeah it should usually be for just one mole but this is correct.

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