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Which of the following reactions is incorrect?
(a) \( 8 \mathrm{LiH}+\mathrm{Al}_{2} \mathrm{Cl}_{6} \longrightarrow 2 \mathrm{LiAlH}_{4}+6 \mathrm{LiCl} \)
(b) \( 2 \mathrm{LiH}+\mathrm{B}_{2} \mathrm{H}_{6} \longrightarrow 2 \mathrm{LiBH}_{4} \)
(c) \( 2 \mathrm{LiH}+\mathrm{Al}_{2} \mathrm{Cl}_{6} \longrightarrow \mathrm{LiCl}+\mathrm{LiH}+\mathrm{LiAlH}_{4} \)
(d) \( \mathrm{NaH}(s)+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{NaOH}(a q)+\mathrm{H}_{2}(g) \)
\( \mathrm{P} \)
W
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