Identify the following processes as either spontaneous or not spontaneous. (a) Ice melts when placed in a

Question:

Identify the following processes as either spontaneous or not spontaneous.
(a) Ice melts when placed in a flask containing water at 5°C.
(b) Hydrogen iodide molecules decompose at 400 K to give a mixture of H₂, I₂, and HI.
(c) Ethanol and water are mixed to form a solution.
(d) Slightly soluble PbCl₂ (K_sp = 1.7 × 10⁻⁵) dissolves in water to form a saturated solution.