If 1.00 mol of nitrogen monoxide gas and 1.00 mol of oxygen gas react, what is the limiting reactant and how many moles of NO2 are produced from the reaction?
2NO + O2  2NO2

Question

If 1.00 mol of nitrogen monoxide gas and 1.00 mol of oxygen gas react, what is the limiting reactant and how many moles of NO2 are produced from the reaction?
2NO + O2  2NO2

anonymous · Answer

@ganeshie8

australopithecus · Answer

The limiting reagent will produce the least amount of NO2 i.e. it is the reactant used up first. Does this help?

anonymous · Answer

is oxygen gas the limiting reactant

australopithecus · Answer

So assuming NO is in excess

(1.0mol/1)*2 = 2mol of NO2 produced per mole of oxygen

Note: we divide by 1 because there is a 1 in front of O2 (there isn't really but we can say there is because there is no number in front and the equation is balanced) and we multiply by 2 because it is in front of NO2 which we are converting to.

Now check to see how many moles are produced when O2 is in excess and you have 1 mol of NO

australopithecus · Answer

If you are stuck let me know but it is the same steps I did for the first part of the question

you divide by the number in front of the reactant or product you are starting from in the equation and multiply by the number you are converting to.

Again what ever reactant gives you the least amount of moles of product is the limiting reagent.

anonymous · Answer

well 1 mole of oxygen is produced for the no2 right

australopithecus · Answer

huh? 2 moles of NO2 are produced from 1 moles of O2 if NO is in excess (in excess meaning there is more than enough of it in the reaction to cause all the O2 to react)

anonymous · Answer

oh okay so no2 is the limiting reactant

australopithecus · Answer

NO2 is the product

australopithecus · Answer

The limiting reagent is a reactant which is used up first in a reaction

anonymous · Answer

ah sorry i meant no

anonymous · Answer

NO

australopithecus · Answer

Did you do the math?

anonymous · Answer

yea. because for the next question, i get o2 as the limiting reactant so this mean no is the limiting reactant for this question

australopithecus · Answer

Well I hope you understood what I was trying to convey to you. You are right 1mol of NO would produce 1 mol of NO2 because 2*1mol/2 = 1mol

australopithecus · Answer

and 1mole < 2 mole

therefore NO is the limiting reagent in this reaction

australopithecus · Answer

If you have anymore questions in regards to this feel free to ask