Question

Balance the reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."
___ HCl + ___ Zn → ___ ZnCl 2 + ___ H 2

The options are 2, 3, 4, and blank.

Answer 1

2HCL + __ Zn --> ZnCl2 + H2

i think that's right, not exactly sure.

Answer 2

Answer: Option (a) is the correct answer.

Explanation:

The given equation is as follows.

       $HCl + Zn \rightarrow ZnCl_{2} + H_{2}$

Number of atoms on reactant side are as follows.

• H = 1
• Cl = 1
• Zn = 1

Number of atoms on product side are as follows.

• H = 2
• Zn = 1
• Cl = 2

To balance the equation, multiply HCl by 2 on reactant side. Therefore, the balanced chemical equation is as follows.

       $2HCl + Zn \rightarrow ZnCl_{2} + H_{2}$