Question

S→SO2→H2SO3→CASO3→SO2

Answer 1

1)S+O2=SO2
2)SO2+H2O=H2SO3
3)H2SO3+CaCl2=CaSO3+2HCl
4)CaSO3=Cao+SO2 четвертое это разложение соля

Answer 2

I will answer in detail. S → SO2 → H2SO3 → CASO3 → SO2

This is a series of chemical reactions involving sulfur, oxygen, water, and calcium. Here are the steps and explanations:

- S + O2 → SO2: This is a combustion reaction where sulfur burns in oxygen to produce sulfur dioxide gas. This reaction is exothermic, meaning it releases heat and energy. - SO2 + H2O → H2SO3: This is a dissolution reaction where sulfur dioxide gas dissolves in water to form sulfurous acid. This reaction is reversible, meaning it can go back and forth depending on the conditions. - H2SO3 + CaCl2 → CaSO3 + 2HCl: This is a double displacement reaction where sulfurous acid and calcium chloride exchange ions to form calcium sulfite and hydrochloric acid. This reaction is acid-base neutralization, meaning it produces a salt and water (in this case, the water is part of the acid). - CaSO3 → CaO + SO2: This is a decomposition reaction where calcium sulfite breaks down into calcium oxide and sulfur dioxide gas. This reaction is endothermic, meaning it absorbs heat and energy.

I hope this helps you understand the process.