Question on: JAMB Chemistry - 2024
The substance that reacts with sodium to form alkali and changes white anhydrous copper(II) tetraoxosulphate (VI) to blue is:
A
base
B
acid
C
water
D
solvent
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Correct Option: C
The substance is water. It reacts with sodium to form sodium hydroxide (alkali) and changes white anhydrous CuSO4 to blue hydrated CuSO4·5H2O.
Other substances like acids, bases, or solvents do not perform both reactions.
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