Bubbles in bulk boiling exist as what type of liquid mixture?

Bubbles in bulk boiling exist as what type of liquid mixture?

• A. Single-phase
• B. Two-phase
• C. Three-phase
• D. Four-phase

Answer: (B)

When boiling occurs in the bulk of a liquid, vapor bubbles form and coexist with the liquid itself. This creates a system with two distinct phases: liquid and vapor. The bubbles are pockets of vapor that exist inside the liquid, so you don’t have just one uniform phase happening—the liquid and its vapor coexist. That’s why the situation is a two-phase mixture. This isn’t a single-phase scenario, since there are both liquid and gas present. It isn’t three-phase or four-phase, which would require solid phases (or additional phases) to be involved—none of those are part of standard bulk boiling.

When boiling occurs in the bulk of a liquid, vapor bubbles form and coexist with the liquid itself. This creates a system with two distinct phases: liquid and vapor. The bubbles are pockets of vapor that exist inside the liquid, so you don’t have just one uniform phase happening—the liquid and its vapor coexist. That’s why the situation is a two-phase mixture.

This isn’t a single-phase scenario, since there are both liquid and gas present. It isn’t three-phase or four-phase, which would require solid phases (or additional phases) to be involved—none of those are part of standard bulk boiling.