The addition of a _______ substance can remove the chemically combined water molecules from crystalline compounds.

dehydrating

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efflorescent

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drying

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deliquescent

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Solution

The correct option is A dehydrating
Only dehydrating agents/substance, such as sulphuric acid can remove chemically combined water molecules from compounds.
$C u S O_{4} .5 H_{2} O (a q) c o n c . H_{2} S O_{4} ⟶ C u S O_{4} (s) + 5 H_{2} O (l)$

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The addition of a _______ substance can remove the chemically combined water molecules from crystalline compounds.

The correct option is A dehydratingOnly dehydrating agents/substance, such as sulphuric acid can remove chemically combined water molecules from compounds. CuSO4.5H2O(aq)conc.H2SO4⟶CuSO4(s)+5H2O(l)

The correct option is A dehydrating
Only dehydrating agents/substance, such as sulphuric acid can remove chemically combined water molecules from compounds.
$C u S O_{4} .5 H_{2} O (a q) c o n c . H_{2} S O_{4} ⟶ C u S O_{4} (s) + 5 H_{2} O (l)$