How much heat is required to evaporate a gram of water at room temperature?

Question

Chemistry

Emery Romero

3 April, 08:50

How much heat is required to evaporate a gram of water at room temperature?

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Sonny · Answer 1

First, the water must be raised to a temperature of 100 degrees - this requires 4.181 joule / (degree x gram). For example, if your "room temperature" is 20 degrees, multiply that by 8. Then you have to actually evaporate it - that costs 2260 joules/gram.