limiting reactant problem

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Blake Salfer 1B
Posts: 30
Joined: Fri Sep 28, 2018 12:18 am

limiting reactant problem

Postby Blake Salfer 1B » Wed Oct 03, 2018 9:07 pm

If you have the equation 2A + 1B = 3C and 1 mole of A is mixed with 1 mole of B, which is the limiting reactant? Please explain as well

Brandon_Tran_2E
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

Re: limiting reactant problem

Postby Brandon_Tran_2E » Wed Oct 03, 2018 9:20 pm

The limiting reactant is A since the molar ratio of the reaction is 2A : 1B. You have 1 B for the reaction but only 1A so A limits the amount of product that is produced.

Kim Tran 1J
Posts: 62
Joined: Fri Sep 28, 2018 12:24 am

Re: limiting reactant problem

Postby Kim Tran 1J » Wed Oct 03, 2018 9:23 pm

A would be the limiting reactant because in the given equation there is a ratio of 2 mol A : 1 mol B.
But since there is only 1 mol A, then you would only need 0.5 mol B.
So all 1 mol of A is consumed, however there is still 0.5 mol B excess since not all of B was needed to react with A.

Matthew Mar 1J
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am
Been upvoted: 1 time

Re: limiting reactant problem

Postby Matthew Mar 1J » Thu Oct 04, 2018 11:41 am

Also, the amount of product C, which I believe was the next question in that problem set, would only be 1.5 mol because conservation of mass ensures that only the 1 mol A and 0.5 mol B consumed go into making the product.


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