If the intial rate of the reaction produces 2 moles of water vapor, H2O, per second, what is the rate at which oxygen, O2, is consumed initially?

Answer 1

Is the reaction
2H2 + O2 ==> 2H2O

2 mols H2O/s x (1 mol O2/2 H2O) = 2 x 1/2 = ? mols O2/s.