Question

Which equation is the balanced chemical equation for the synthesis reaction for the formation of sulfur dioxide (SO2)?
Responses

2S + O2→SO2
2 uppercase S plus uppercase O subscript 2 end subscript rightwards arrow uppercase S O subscript 2 end subscript

S + O2→2SO2
uppercase S plus uppercase O subscript 2 end subscript rightwards arrow 2 uppercase S O subscript 2 end subscript

S + O2→SO2
uppercase S plus uppercase O subscript 2 end subscript rightwards arrow uppercase S O subscript 2 end subscript

S + 2O2→4SO2

Answer 1

S + O2 → SO2

This is balanced: 1 sulfur atom on each side and 2 oxygen atoms on each side (O2 → SO2).