limiting reactant

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AMahadi
Posts: 83
Joined: Thu Jul 11, 2019 12:17 am

limiting reactant

Postby AMahadi » Sun Oct 06, 2019 4:29 pm

is the limiting reactant usually the one with the smallest number of moles? why or why not?

Hannah Pham
Posts: 88
Joined: Fri Aug 09, 2019 12:17 am

Re: limiting reactant

Postby Hannah Pham » Sun Oct 06, 2019 4:42 pm

Not always; you can typically determine the limiting reactant by determining which reactant produces the least amount of product.

madawy
Posts: 71
Joined: Fri Aug 09, 2019 12:17 am

Re: limiting reactant

Postby madawy » Sun Oct 06, 2019 6:17 pm

Unfortunately, you’d have to compare whether or not the amount of moles you have is greater than the amount of moles you need; sometimes you can get a hint from the ratios, but most of the time the stoichometric coefficients and the sheer amount are not enough to tell

quresh3E
Posts: 36
Joined: Wed Sep 18, 2019 12:17 am

Re: limiting reactant

Postby quresh3E » Sun Oct 06, 2019 6:26 pm

What is the best way to find the limiting reactant when all of the reactants have coefficients above 1?

105099972
Posts: 5
Joined: Wed Feb 27, 2019 12:15 am

Re: limiting reactant

Postby 105099972 » Sun Oct 06, 2019 6:56 pm

Find the number of grams produced and compare it to the ratio of the product

305376058
Posts: 35
Joined: Thu Jul 11, 2019 12:17 am

Re: limiting reactant

Postby 305376058 » Sun Oct 06, 2019 7:57 pm

The limiting reactant is not necessarily always the one with the smallest number of moles. To determine which reactant is limiting, you have to compare the moles of each reactant to the ratios in the balanced chemical equation.

Aarushi Solanki 4F
Posts: 90
Joined: Sat Jul 20, 2019 12:17 am

Re: limiting reactant

Postby Aarushi Solanki 4F » Sun Oct 06, 2019 8:01 pm

It may be, but not always. You can calculate it by figuring out which amount would create the least moles of product.

Kendra Barreras 3E
Posts: 51
Joined: Mon Sep 23, 2019 12:16 am

Re: limiting reactant

Postby Kendra Barreras 3E » Sun Oct 06, 2019 8:02 pm

Not necessarily, you first would have to see which ratio you need using your balanced chemical equation and then convert the grams you were given into moles and see if it fits the ratio, you have. If it does not you have to check if it either has more or less than you need and evaluate from there.

005384106
Posts: 75
Joined: Sat Aug 24, 2019 12:16 am

Re: limiting reactant

Postby 005384106 » Sun Oct 06, 2019 8:27 pm

I have found it easiest to find the limiting reactant by solving for how much product can be produced. This can be used by solving for the amount of moles there are of each reactant and using the molar ratio to solve for the grams of a product and whichever reactant produces the smaller amount of product that is your limiting reactant. Sorry for a confusing explanation.

SimranSangha4I
Posts: 85
Joined: Sat Sep 14, 2019 12:17 am

Re: limiting reactant

Postby SimranSangha4I » Sun Oct 06, 2019 9:30 pm

Not necessarily, but the reactant with the smallest number of moles can be the limiting reactant if all reactants within the chemical equation react in a mole ratio of one to one.


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