Question

In the reaction shown, how many moles of HCl are needed to react with 2.4 moles of Al?

2 Al + 6 HCI - 2 AlCl3 + 3 H2
оа
7.2
Ob
6.4
Ос
0.8
d
1.3
е
4.8

Answer 1

7.2 moles

Step-by-step explanation:

Since the equation is balanced, we can use a mole ratio. 6 moles of HCl : 2 moles of Al. Thus, to convert, we simply multiply by 3.

Answer 2

7.2 moles of HCl

Step-by-step explanation:

The balanced reaction equation of the reaction is;

2 Al + 6 HCI ---------> 2 AlCl3 + 3 H2

We can see from the reaction equation that;

6 moles of HCl reacts with 2 moles of Al

Hence;

x moles of HCl reacts with 2.4 moles of Al

x = 6 * 2.4/2

x = 7.2 moles of HCl