Heating orthoboric acid () at yields compound X. Heating X to yields compound Y. What are X and Y re — p Block Elements Chemistry Question

💡 Solution & Explanation

Heating $H_3BO_3$ to $100^\circ C$ removes water to form Metaboric acid ($HBO_2$). Heating to $160^\circ C$ dehydrates it further to Tetraboric acid ($H_2B_4O_7$). Strong red heat finally forms Boric anhydride ($B_2O_3$).