Question

Use the equation to answer the question.

H2SO4+HI→H2S+I2+H2O

Which option shows a correctly balanced chemical equation?

(1 point)
Responses

H2SO4+8HI→H2S+8I2+4H2O
h sub 2 S O sub 4 plus 8H I rightarrow h sub 2 s plus 8i sub 2 plus 4h sub 2 o

H2SO4+8HI→H2S+4I2+4H2O
h sub 2 S O sub 4 plus 8H I rightarrow h sub 2 s plus 4i sub 2 plus 4h sub 2 o

2H2SO4+2HI→2H2S+I2+4H2O
2 h sub 2 S O sub 4 plus 2H I rightarrow 2 h sub 2 s plus i sub 2 plus 4h sub 2 o

H2SO4+HI→H2S+I2+H2O

Answer 1

H2SO4 + 8HI → H2S + 4I2 + 4H2O

Check: H: 2+8=10 → RHS 2+8=10; S:1=1; I:8=8 (4×2); O:4=4. So this is balanced.