Deposits of elemental sulfur are often seen near active volcanoes. their presence there may be due to the following reaction of so2 with h2s:

so2(g) + 2 h2s(g) â 3/8 s8(g) + 2 h2o(g)
assuming the values of îhâ°rxn and îsâ°rxn do not change appreciably with temperature, over what temperature range is the reaction spontaneous?

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

they are called fossil fuels