Solved: A pressure cooker is a sealed pot that cooks food much faster than most other

Chapter 17, Problem 78

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A pressure cooker is a sealed pot that cooks food much faster than most other methods because increased pressure allows water to reach higher temperatures than the normal boiling point (Fig. 17.13). Pressure cookers afford many advantages: faster cooking, lower energy consumption, and less vitamin loss. The pressure-cooker principle is also used in autoclaves for sterilizing surgical instruments in hospitals and equipment in biology labs. In waters phase diagram (Fig. 17.9), normal boiling occurs at a point on the line between the triple point and the critical point. In a pressure cooker, boiling occurs a. at a point in the diagram directly above where it normally occurs. b. higher up on the line between the triple and critical points. c. at a point directly to the right of where it normally occurs. d. beyond the critical point.