1.

A) CuSO4 + 5H2 O CuSO4.5H2 O

A. PCl<sub>3</sub> + 3H<sub>2</sub> O H<sub>3</sub> PO<sub>3</sub> + 3HCl
B.
C. Hydration and dehydration
Answer» C. Hydration and dehydration


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