Answer to Question #106505 in Inorganic Chemistry for Delaney Gilder

Question

If 2.00 moles of H2 and 1.55 moles of O2 react how many moles of H2O can be produced in the reaction below? 2H2+O2+2H2O

Answer 1

In this reaction O2 is the excess reactant and H2 is the limiting reactant, because:

n(H2)/2 < n(O2)/1 ; 1<1.55;

1 and 2 - stoichiometric coefficients of O2 and H2 respectively;

That's why the produced H2O is calculeted by the amount of H2 (the limitant reactant);

n(H2O)=n(H2)* (stoichiometric coefficients of H2O) / (stoichiometric coefficients of H2)=

=2*2/2=2 mole

Answer: 2 moles of H2O can be produced