Question

If 10 moles of Fe react according to the chemical equation below how many moles of H2 would you expect to produce

Answer 1

Answer:

15 moles of H2.

Explanation:

First, let's write the chemical reaction:

$2Fe\text{ + 3H}_2SO_4\rightarrow Fe_2(SO_4)_3+3H_2.$

Now, we can find how many moles of H2 are being produced by 10 moles of Fe doing a rule of three. You can see in the chemical equation that 2 moles of Fe reacted produces 3 moles of H2, so the rule of three would look like this:

$\begin{gathered} 2\text{ moles Fe}\rightarrow3\text{ moles H}_2 \\ 10\text{ moles Fe }\rightarrow?\text{ moles H}_2 \end{gathered}$

And the calculation would be:

$10\text{ moles Fe}\cdot\frac{3\text{ moles H}_2}{2\text{ moles Fe}}=15\text{ moles H}_2.$

We will expect to produce 15 moles of H2.