Question

Use for questions 1-4

Answer 1

Answer: 1) 1.6 moles of HCl

2) 7.0 moles of HCl

3) 2.4 moles of hydrogen

4) 0.96 moles of HCl

Explanation:

The balanced chemical equation is:

$Zn+2HCl\rightarrow ZnCl_2+H_2$  

According to stoichiometry :

1 mole of $Zn$ require = 2 moles of $HCl$

0.8 moles of $Zn$ will require=$\frac{2}{1}\times 0.8=1.6moles$  of $HCl$

3.5 moles of $Zn$ will require=$\frac{2}{1}\times 3.5=7.0moles$  of $HCl$

According to stoichiometry :

2 moles of $HCl$ produce = 1 mole of $H_2$

4.8 moles of $HCl$ will require=$\frac{1}{2}\times 4.8=2.4moles$  of $H_2$

According to stoichiometry :

1 mole of $ZnCl_2$ are produced by = 2 moles of $HCl$

0.48 moles of $ZnCl_2$ are produced by =$\frac{2}{1}\times 0.48=0.96moles$  of $HCl$