Note: Above question is incomplete. Complete question is <span>What type of chemical reaction is so3(g) + h2o(l) → h2so4(aq) a) Neutralization b) Decomposition c) Combination d) Single displacement reaction ............................................................................................................... Solution: In current context, following things may be noted 1) Neutralization reactions: In neutralization reactions, acid and base combine to form salt and water. b) Decomposition reaction: R</span><span>eaction in which a single substance broken down two or more smaller substances is refereed as decomposition reaction. Decomposition reactions are characterized be present of single molecule on reactant side. c) Combination reaction: In a recombination reaction</span><span> two or more molecules combine to form a single product. d) Single displacement reaction: R</span><span>eaction in which an element within a compound is displaced by a another element is referred as single displacement reaction.
Above reaction satisfies the criteria of combination reaction, hence correct answer is option C, combination. </span>