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What process is illustrated below? S(s) ⇌H2O⇌ S (aq)<...

What process is illustrated below? S(s) ⇌H2O⇌ S (aq)

A.

Decomposition of a solid

B.

Melting of a solid

C.

Formation of saturated solution of a solid

D.

Sublimation of a solid

Correct answer is C

From the  given equation:
S(s)S(aq) (in the presence of (H2O)
The solid form has changed to an aqueous solution upon dissolution in water. Due to the presence of the reversible reaction arrow ⇌, the solution (aqueous) formed is saturated, this is because a saturated solution is an equilibrium system