When a sample of solid K2SO4 is dissolved completely in water, which of the following particulate-level descriptions most accurately represents the species present in the solution?
a) Equal numbers of K+ and SO42− ions are shown, each surrounded by water molecules.
b) Separate K+ ions and SO42− ions, with twice as many K+ as SO42−, all dispersed among water molecules.
c) Pairs of K2SO4 units remain associated as neutral clusters surrounded by water molecules, with no individual ions shown.
d) Individual K2+ ions and SO44− ions are present in a 1:1 ratio, each solvated by water molecules.