I need question number 5 answered and explained please. Thank you Heat is applie
ID: 1070376 • Letter: I
Question
I need question number 5 answered and explained please.
Thank you
Heat is applied at a constant rate, the time and temperature scales are linear. Points B-E represent points on the curve where the slope changes. Points A and F are the beginning and end of the curve, respectively. Explain the macroscopic and microscopic changes that are occurring at each point along the heating curve. The mass of the sample does not change during the increasing in temperature. Explain why the length of segment BC is significantly shorter than segment DE. using the kinetic molecular theory. Use the phase diagram below to give the following information:Explanation / Answer
From the heatung curve
4. Regions A to B, C to D and E to F, the macroscopic changes are the same, phase does not change whereas, at the microscopic level intermolecular forces between the molecules are weakened. Regions B to C, and D to E, the microscopic level, intermolecular forces break and ohase transiiton occurs. At the macroscopic level, the molecules absorb heat and according to kinetic theory of gases, the incresse in molecular motion due to absorbed hear causes the intermolecular forces to loosen up.
5. The mass of sample does not change in any of the segments. Region B to C is a faster process as it is transformation of solid to liquid phase, entropy change is much greater. Molecules in this region absorb energy by heat and moves much faster once separate. From D to E, liquid going to the gaseous state, the change in entropy is much more slowly and the phase change is thus longer process.