\( \mathrm{Na}+\mathrm{Al}_{2} \mathrm{O}_{3} \stackrel{\text { hig...
\( \mathrm{Na}+\mathrm{Al}_{2} \mathrm{O}_{3} \stackrel{\text { high temperature }}{\longrightarrow} \mathrm{X} \underset{\text { water }}{\stackrel{\mathrm{CO}_{2} \text { in }}{\longrightarrow}} \mathrm{Y} \); compou nd \( \mathrm{Y} \) is :
(A) \( \mathrm{NaAlO}_{2} \)
(B) \( \mathrm{NaHCO}_{3} \)
(C) \( \mathrm{Na}_{2} \mathrm{CO}_{3} \)
\( \mathrm{P} \)
(D) \( \mathrm{Na}_{2} \mathrm{O}_{2} \)
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