Question

If 12 mol if lithium were reacted with excess nitrogen gas how many moles of lithium nitride would be produced

Answer 1

6Li + N2 ---------------> 2Li3N

Notice that the balanced equation says that if you have 6 moles of Li you get 2 moles of Li3N??

Well 12 moles is just double 6 moles, so wouldn't you expect 4 moles of Li3N to be formed?

Step-by-step explanation:

Answer 2

Answer: 4 moles of
`Li_3N`

Step-by-step explanation:

The balanced chemical equation for the reaction is:

`6Li+N_2\rightarrow 2Li_3N`

As can be seen from the chemical equation, 6 moles of lithium reacts with 1 mole of nitrogen to produce 2 moles of lithium nitride.

Given : Lithium is the limiting reagent as it limits the formation of product and nitrogen is the excess reagent as it is present in excess.

Now if 6 moles of lithium produces = 2 moles of
`Li_3N`

Thus 12 moles of lithium produces =
`(2)/(6)* 12=4moles` of
`Li_3N`

Thus 4 moles of
`Li_3N`will be produced.