Meehan98
  • Meehan98
I need help with a Chemistry question!
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Meehan98
  • Meehan98
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Rushwr
  • Rushwr
What do u think the answer is ?
Meehan98
  • Meehan98
Honestly, I don't know, I know that 3 mol of Nitrogen has the potential to produce 102.24 g of NH3 and that 5 moles of Hydrogen has the potential to produce 56.8 grams of NH3, but I don't know how to figure out how many moles of nitrogen will be left over after the reaction.

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Rushwr
  • Rushwr
According to the equation we can see that 1 mole of nitrogen reacts with 3 moles of hydrogen right? For all the reactants to be over the moles of reactants should be in that ratio. By looking at the data we can say that there's a limiting agent right?
Rushwr
  • Rushwr
Because here we are given with 3 moles of nitrogen and 5 moles of hydrogen. According to that equation 3 moles should react with 6 moles of hydrogen right?
Rushwr
  • Rushwr
I want u to do this sum with me ! @Meehan98
Meehan98
  • Meehan98
Okay, if the ratio is 1:3, shouldn't 3 moles of Nitrogen react with 9 moles of Hydrogen?
Rushwr
  • Rushwr
Oh yes sorry about that.
Rushwr
  • Rushwr
So now we know that the limiting agent right?
Meehan98
  • Meehan98
The limiting reactant would be Nitrogen.
Rushwr
  • Rushwr
no. See we had 3moles of nitrogen , to react with that we have to have 6 moles of hydrogen. But here we don't have 6 moles. So we have limited amount of Hydrogen. So that will be the limiting reagent. So we will have nitrogen in excess.
Meehan98
  • Meehan98
Oh okay, I knew that nitrogen was the excess before because I used conversions but just got confused. Now, to figure out how many nitrogen will be left over in the reaction. Do you just subtract the moles of nitrogen from the moles of ammonia?
Rushwr
  • Rushwr
okay so now we have to find the moles of nitrogen that reacts with 5 moles of hydrogen.
Rushwr
  • Rushwr
if 3moles of hydrogen will react with 1 mole of nitrogen, how many moles of nitrogen will react with 5 moles of hydrogen.
Meehan98
  • Meehan98
It would be 5/3 which is 1.67 moles of Nitrogen. Thank you so much!!!
Rushwr
  • Rushwr
yeah but that's the amount that reacted. TO find the excess amount u have to deduct that from 3moles. :)
Meehan98
  • Meehan98
Oh, okay. That makes sense. So, it's 1.3 Thank you!
Rushwr
  • Rushwr
yeah ! anytym :)

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