Determine the theoretical and percent yield of hydrogen gas if 74.0 g water undergoes electrolysis to produce hydrogen and oxygen and 2.61 g hydrogen is collected.

Question

anonymous · Answer

You need to start with the balanced chemical equation for the reaction.

anonymous · Answer

done

anonymous · Answer

Now, convert the 74.0 g H2O to grams of H2 using stoichiometry.  This answer will be the theoretical (or maximum) yield.

anonymous · Answer

how

anonymous · Answer

You'll need to molar mass of the water.  Do you know how to find that using the periodic table?

anonymous · Answer

74.0g H_2O *mole/mass of mole of water *1 mole H_2:1mole H_2O should give you what you need