Do particles vibrate more when they are hot or when they are cold?

Complete this brønsted-lowry reaction placing each product by its appropriate label. hso4- + hcn

The answer for #3 is c but i don't know why

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water