A mixture of 1.0 mole of Al and 3.0 mole of `Cl_(2)` are allowed to react as:
`2Al_((s))+3Cl_(2) rarr 2AlCl_(3(S))`
(a) Which is limiting reagent?
(b) How many moles of `AlCl_(2)`are formed?
(c ) Moles of excess reagent left unreacted.

Explanation

`{:(,2Al_(s)+,3Cl_(2)rarr,2AlCl_(3(s)),),("Moles before reaction",1.0,3.0,0,),("Moles after reaction",0,1.5,1.0,):}`
Moles ratio for reactants and products are `2:3:2`
(a) Thus limiting reagent is `Al`.
(b)Moles of `AlCl_(3)` formed `=1.0`
(c ) Moles of excess reagent `Cl_(2)` left unreacteed `= 1.5`