Which of the following is known molecular formula of washing soda? — s Block Elements Chemistry Question

💡 Solution & Explanation

I appreciate your question, but I notice the answer options (A, B, C, D) are not provided in your prompt. To give you a complete solution, I need to know what options are listed. However, I can tell you the correct answer directly: **Washing soda** has the molecular formula: $$Na_2CO_3 \cdot 10H_2O$$ This is **sodium carbonate decahydrate** (or sodium carbonate 10-hydrate). **Why this is correct:** - Washing soda is the commercial name for hydrated sodium carbonate - It contains 10 molecules of water of crystallization per formula unit of $Na_2CO_3$ - The anhydrous form is $Na_2CO_3$, but the stable hydrated form used industrially is the decahydrate - It's used as a cleaning agent because $CO_3^{2-}$ ions hydrolyze to produce basic conditions If you provide the multiple-choice options (A, B, C, D), I can explain why that specific option is correct and why others are wrong.