SO4^2- is estimated as BaSO4 but not as MgSO4. — s Block Elements Chemistry Question

💡 Solution & Explanation

Step 1: Soda lime is a dry chemical mixture widely used in laboratory experiments, especially for decarboxylation reactions. Step 2: It is prepared by treating calcium oxide (CaO) with an aqueous solution of sodium hydroxide (NaOH) and heating the mixture to dryness. Step 3: This composition is represented as CaO + NaOH(aq), matching option (b).