In the solid state $PCl_5$ exists as, A. $[PCl_4]^(-)$ & $[PCl_6]^-$ B.covalent $PCl_5$ molecules only C. $[PCl_4]^+ & [PCl_6]^-$ ions D.covalent $P_2Cl_10$ molecules only ?

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Answer 1 · 2018-06-20T18:59:08

$"Option B"$

Phosphorus pentachloride, $PCl_5$ , is MOLECULAR, and sublimable...of course it reacts with water given the following reaction...

$PCl_5(s) + 4H_2O(l) rarr H_3PO_4(aq) + 5HCl(aq)$ ...

In the solid state PCl_5PCl_5 exists as, A.[PCl_4]^(-)[PCl_4]^(-) & [PCl_6]^-[PCl_6]^- B.covalent PCl_5PCl_5 molecules only C.[PCl_4]^+ & [PCl_6]^- [PCl_4]^+ & [PCl_6]^- ions D.covalent P_2Cl_10P_2Cl_10 molecules only ?