This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
The gas that can be dried using concentrated tetraoxosulphate(VI) acid (H_2SO_4) must not react with it. Concentrated H_2SO_4 is a strong acid, an oxidizing agent, and a dehydrating agent. Let's examine each option: A) Hydrogen bromide (HBr): HBr is a reducing agent. Concentrated H_2SO_4 will oxidize HBr to bromine (Br_2). 2HBr + H_2SO_4 → Br_2 + SO_2 + 2H_2O Therefore, HBr cannot be dried by concentrated H_2SO_4. B) Sulphur(IV) oxide (SO_2): SO_2 is an acidic gas. It does not react with concentrated H_2SO_4 because both are acidic. Therefore, SO_2 can be dried by concentrated H_2SO_4. C) Hydrogen sulphide (H_2S): H_2S is a strong reducing agent. Concentrated H_2SO_4 will oxidize H_2S to sulfur (S). H_2S + H_2SO_4 → S + SO_2 + 2H_2O Therefore, H_2S cannot be dried by concentrated H_2SO_4. D) Ammonia (NH_3): NH_3 is a basic gas. It will react with the acidic concentrated H_2SO_4 to form ammonium sulfate. 2NH_3 + H_2SO_4 → (NH_4)_2SO_4 Therefore, NH_3 cannot be dried by concentrated H_2SO_4. Based on this analysis, only sulphur(IV) oxide can be dried using concentrated tetraoxosulphate(VI) acid. The final answer is B.