Question

In: Chemistry

1. there are two possible for your temperature data. either it increased the entire time or...

1. there are two possible for your temperature data. either it increased the entire time or it increased for a while and then leveled off. which did water and Alchol do? Why?

# water boil at 100 dgree Cent grade. Alcohol boil @ 82 C

2.what do you think is the temprature of the steam? why?

3. what do you think is the temperature of the gaseous alcohol? why?

Solutions

Expert Solution

(1) When heat is applied to water or alcohol at room temperature then gradually the temperature starts increasing. When temperature reaches 100 degree C for water then the rise is leveled off and it becomes constant because 100 degree C is the boiling point of water. Addition of more heat converts water at 100 degree C to steam at 100 degree C. Similarly, the rise in temperature of alcohol is leveled off at 82 degree C because 82 degree C is the boiling point of alcohol. Addition of more heat converts alcohol at 82 degree C to gaseous alcohol at 82 degree C.

(2) The temperature of steam is 100 degree C, but it contains more heat energy than water at 100 degree C. This is because water absorbs latent heat of vaporization to get converted to steam. The temperature remains constant at 100 degree C during this process.

(3) The temperature of gaseous alcohol is 82 degree C, but it contains more heat energy than liquid alcohol at 82 degree C. This is because like all other fluids, alcohol also absorbs latent heat of vaporization to get converted to gaseous alcohol. The temperature remains constant at 82 degree C during the process.


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