When concentrated nitric acid () is dehydrated using phosphorus pentoxide (), it yields an oxide of nitrogen (). What is the true nature of compound ?

Question

When concentrated nitric acid ($HNO_3$) is dehydrated using phosphorus pentoxide ($P_4O_{10}$), it yields an oxide of nitrogen ($X$). What is the true nature of compound $X$?

Prashant Kotian · Accepted Answer

Correct answer: C. Dehydration of by produces dinitrogen pentoxide (), which is the acidic anhydride of nitric acid. Its structure is , meaning it features an linkage rather than a direct bond.

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