Question #ffcd9

1 Answer
Mar 17, 2017

Answer:

9

Explanation:

This is the value of a balance chemical reaction equation! You can see directly that the ratio of HCl to #Fe_2O_3# is 6:1, and with 2 Fe in the oxide the molar ratio of HCl to Fe(III) is 3:1. Therefore, if 3 moles of Fe(III) are used, the amount of HCl required is 3*3 = 9 moles.