STOICHOIMETRIC CHEM - Moles - EASY BEST ANSWER?

Okay I have to figure out problems like these so please solve and I'll give you best answer - that way i can work on my others.





Oxygen reacts with SO2 to produce SO3,





2SO2 + O2 2 SO3








6 moles of O2 react with 10 moles of SO2





How many moles of O2 are required to react with 10 moles of SO2? How many moles of SO2 are required to react with 6 moles of O2? How many moles of the excess reagent are left? How many moles of SO3 are produced?

STOICHOIMETRIC CHEM - Moles - EASY BEST ANSWER?
SO2 + O2 -%26gt; SO3





on balancing





2SO2 + O2 -%26gt; 2SO3





so 2 moles of SO2 reacts with 1 mole of O2





for 10 moles of SO2 10/2=5 moles of O2 are required and 10 moles of SO3 are produced


for 6 moles of O2 6*2=12 moles of SO2 are required and 12 moles of SO3 are produced





in first rxn only 5 moles of O2 are required so ,,excess 1 mole of O2 is left





in second rxn only 10 moles of SO2 are available , so only 5 moles of O2 react hence 1 mole of O2 is left