Explain why a steam burn from gaseous water at 100 °C is worse than a water burn involving the same amount of liquid water at 100 °C.
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Burns or, more accurately, burn effects (blisters, redness, etc) are caused by heat, not temperature. The short answer is that steam at 100 C contains more heat than water at 100 C. Thus more, and more severe, burn effects come from the steam than from the water.
The reason steam has more heat, in the same amount of mass, is because water takes on additional heat to change from its liquid state into its gas state (i.e., into steam). That is, up to 100 C the heat raises the temperature of the water. But at 100 C, as the water changes to steam, more heat is added without changing the temperature.
Textbook: Introductory Chemistry
Author: Nivaldo J Tro
This full solution covers the following key subjects: Water, burn, liquid, Gaseous, explain. This expansive textbook survival guide covers 19 chapters, and 2045 solutions. This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. Since the solution to 17Q from 12 chapter was answered, more than 287 students have viewed the full step-by-step answer. The answer to “Explain why a steam burn from gaseous water at 100 °C is worse than a water burn involving the same amount of liquid water at 100 °C.” is broken down into a number of easy to follow steps, and 27 words. Introductory Chemistry was written by and is associated to the ISBN: 9780321910295. The full step-by-step solution to problem: 17Q from chapter: 12 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM.