00:01
Okay, this is chapter 11 section problem 88.
00:06
And it asks us to draw a heating curve, such as the one in figure 11 .33, for one mole of benzene beginning at zero degrees celsius, and ending at 100 degrees celsius.
00:19
So it wants us to assume that the values given here are constant over the relevant temperature ranges, so just draw straight lines.
00:27
Okay, so that's what i've done here.
00:30
We can see the values included in the textbook.
00:35
And figure 11 .33 kind of looks like this, where they started below the freezing point and ended above the boiling point, and they calculated the energy at the different stages and the total energy, and they tried to include the slopes as representative of the amount of energy required to go through the different stages.
01:06
So that's what i've tried to do here.
01:08
Okay, so for steps one, two, three, four, and five, you know, going from zero to five degrees celsius, that's going to be in the solid stage.
01:18
And the energy required to heat that is calculated by the specific heat of the solid.
01:27
So 118 joules per mole per k.
01:29
And throughout this whole calculation, we're assuming one mole.
01:34
Okay.
01:35
And so, you know, if you just multiply, you know, the delta t there is 5 .4 degrees celsius and the delta celsius and delta kelvin are the same...