Question

Which ratio balances the equation below?

HCl + Zn
H2 + ZnCl2

Group of answer choices

2,1,1,1

1,2,1,2

2,1,2,1

2,1,1,2

1,2,2,1

Answer 1

Balanced equation: Zn + 2 HCl → H2 + ZnCl2. So the coefficients (HCl, Zn, H2, ZnCl2) are 2, 1, 1, 1.