When a standard solution of NaOH is left in air for a few hours : — s Block Elements Chemistry Question

💡 Solution & Explanation

Step 1: When sodium metal is heated at around 300-400°C in a stream of dry ammonia gas, a chemical reaction occurs with the evolution of hydrogen gas. Step 2: The chemical equation for this process is: 2Na + 2NH3 -> 2NaNH2 + H2. Step 3: The product NaNH2 is sodamide or sodium amide, which corresponds to option (c).