Question

Acetone and water are miscible. Acetone and hexane are also miscible.

What is the possible explanation for their miscibilities, considering that water and hexane are immiscible?

Answer 1

The rule of thumb is that "like dissolves like"
Acetone has a C-C-C back bone making it similar to the hydrocarbon of hexane.
water's strongest intermolecular forces is hydrogen bonding while ether's is dispersion with some dipole-forces.