Question

Na + Cl2 --> 2 NaCl If 15 mol Na reacts with 15 mol Cl2 , _____ is the limiting reactant and ____ is the excess reactant. Cl2, Na They run out at the same time Na, Cl2 ?

Answer 1

You forgot to balance the equation for each mol of `Cl_2`, 2 mols of Na react, so therefore Na is limiting and `Cl_2` is excess

Explanation:

Check for LR
`15 mol Cl_2 *(2mol Na)/ (1 mol Cl_2)`
Therefore 30 mol Na will be required to react, and since we don't have that amount, Na is limiting.