Question

Given:

2LiBr + Ba → BaBr2 + 2Li

In this chemical reaction, 325 grams of barium (Ba) react completely. How many moles of lithium (Li) are produced?

A.
1.18 mol
B.
2.37 mol
C.
4.73 mol
D.
16.4 mol
E.
32.9 mol

Answer 1

E 32.9 is moles of lithium(Li) are produced

Answer 2

In the reaction it's implied that,

2x moles of LiBr reacts with x mole Ba to produce x mole BaBr₂ and 2x moles of Li.

Now, 325 gram  Ba = (325/137) = 2.37 moles of Ba

Thus, produced Li = (2.37 x 2) moles = 4.74 moles.

So the correct option is C.