Exhibit 8-1
For the following questions, consider the equation below. Zinc will react with a solution of hydrochloric acid to produce hydrogen gas:
Zn(s) + 2 HCl(aq) ® ZnCl2(s) + H2(g)
Refer to Exhibit 8-1. How many moles of hydrochloric acid react with one mole of zinc?
1. the same number as the number of moles of hydrogen produced
2. between 1 and 2 depending on how much hydrogen gas is formed
3. 1
4. 2
I am working on some practice questions in the book, but there is not an answer to this question. Does anyone know the answer?
Thanks
2 HCl react with 1 Zinc
Single replacement rxn
So 2.
To determine how many moles of hydrochloric acid react with one mole of zinc, we can look at the balanced chemical equation:
Zn(s) + 2 HCl(aq) → ZnCl2(s) + H2(g)
From the equation, we can see that for every one mole of zinc (Zn), two moles of hydrochloric acid (HCl) are required for the reaction. Therefore, the correct answer is option 4: 2.
It's important to note that the coefficients in a balanced chemical equation represent the molar ratios between the reactants and products. So, in this case, the ratio of Zn to HCl is 1:2.