Consider a compound that has a melting point at 65 °C and a boiling point at 175 °C. Which of the following images represents a heating curve for the compound from 40 °C to 200 °C? (LO 11.5)

Video transcript

Hey everyone we're asked to take into consideration a substance that melts at 75°C and boils at 115°C. Which of the following graphs best depicts the compounds heating curve between 50°C and 250°C. First I'm going to go ahead and pull up our heating curve. As we can see in our heating curve, we have two horizontal flat parts where the state changes from a solid to a liquid and then from a liquid to a gas. Now looking at these graphs, it looks like answer choice A matches our heating curve so A is going to be our answer, but let's go ahead and assess B, C and D. So for B B doesn't match our graph, so this can't be our answer. Now looking at C. N. D. These also do not match our heating curve. So our final answer here is going to be answer choice A since we have those two horizontal flat parts. Now, I hope that made sense. And let us know if you have any questions