Question

5.00mole of Zn metal is completely reacted in an HCl solution to produce zinc(II) choride (ZnCl2) and hydrogen gas (H2) according to:

Zn(s) + 2HCl(aq) -----> ZnCl2(aq) + H2(g)


1. How many moles of ZnCl2 are produced?

2. How many moles of HCl are reacted?

Answer 1

5.00 moles of ZnCl2 are produced.

10.00 moles of HCl are reacted.

Step-by-step explanation:

The balanced chemical equation tells us that 1 mole of Zn reacts with 2 moles of HCl to produce 1 mole of ZnCl2. Therefore, if 5.00 moles of Zn are completely reacted, the same amount of moles of ZnCl2 will be produced, which is also 5.00 moles.

According to the balanced chemical equation, 1 mole of Zn reacts with 2 moles of HCl. Therefore, to react 5.00 moles of Zn, we would need 2 moles of HCl for each mole of Zn. Since we have 5.00 moles of Zn, we would need 2 moles of HCl for each mole of Zn, which totals to 10.00 moles of HCl. So, 10.00 moles of HCl would be reacted.

Answer 2

Answer: 1. The mole ratio between Zn and ZnCl2 is 1:1. Therefore, if 5.00 moles of Zn react, 5.00 moles of ZnCl2 would be produced.

2. The mole ratio between Zn and HCl is 1:2. Therefore, if 5.00 moles of Zn react, 10.0 moles of HCl would be reacted.