Problem: Examine the heating curve for water.Explain why the curve has two segments in which heat is added to the water but the temperature does not rise.

FREE Expert Solution

We have to describe why the heating curve of water has segments where heat is added to the system, but the temperature does not rise.


We can see that the two segments are represented as horizontal lines and they are at the melting point and the boiling point of water.

86% (309 ratings)
View Complete Written Solution
Problem Details

Examine the heating curve for water.

The graph depicts heat added in kilojoules per mole, versus temperature, in degrees celsius. The line graph is broken into five sections. Section one represents ice warming, with the graph having a positive slope. It begins at the point (0,-25), and ends at (2,0). Section two represents ice melting to liquid, and has a slope of zero. It begins at (2,0), and ends at (6,0). Section three represents liquid water warming, having a positive slope. It begins at (6,0), and ends at (15,100). Section four represents the liquid water vaporizing to steam, having a slope of zero. It begins at (15,100), and ends at (55,100). Section five represents steam warming, having a positive slope.  It begins at (55,100), and ends at (57,125).

Explain why the curve has two segments in which heat is added to the water but the temperature does not rise.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Heating and Cooling Curves concept. You can view video lessons to learn Heating and Cooling Curves. Or if you need more Heating and Cooling Curves practice, you can also practice Heating and Cooling Curves practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Weinert's class at OKSTATE.