On heating 'Trona (Na_2CO_3 cdot NaHCO_3 cdot | vedclass

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(A) Trona is a double salt with the formula $Na_2CO_3 \cdot NaHCO_3 \cdot 2H_2O$. Upon heating,it undergoes thermal decomposition. First,the water of

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$Na_2CO_3$

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(A) Trona is a double salt with the formula $Na_2CO_3 \cdot NaHCO_3 \cdot 2H_2O$. Upon heating,it undergoes thermal decomposition. First,the water of crystallization is lost,and then the sodium bicarbonate $(NaHCO_3)$ component decomposes into sodium carbonate $(Na_2CO_3)$,water vapor $(H_2O)$,and carbon dioxide $(CO_2)$. The overall reaction is: $2(Na_2CO_3 \cdot NaHCO_3 \cdot 2H_2O) \xrightarrow{\Delta} 3Na_2CO_3 + 5H_2O + CO_2$. Thus,the final solid residue remaining is sodium carbonate $(Na_2CO_3)$.

On heating 'Trona $(Na_2CO_3 \cdot NaHCO_3 \cdot 2H_2O)$' with the help of a Bunsen burner,we get . . . . . . as the solid residue.

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