When solid sodium iodide is treated with concentrated sulfuric acid, a mixture of gaseous and solid products is formed. One of the gaseous products is highly toxic and characterized by its distinct smell of rotten eggs. What is the chemical formula of this gas?
SO2\text{SO}_2SO2
H2S\text{H}_2\text{S}H2S
HI\text{HI}HI
I2\text{I}_2I2
41 exam-style questions on OCR GCSE Chemistry Identifying the products of chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.