A student tests a crystalline product's melting point twice. In one test, a capillary tube with a sample of 1–2 mm height melts at 151–152°C. The sample height is 3–4 mm, and the melting range is 151–155°C. Explain the second sample's wider melting point range. The compound's melting point is 153°

A student tests a crystalline product's melting point twice. In one test, a capillary tube with a sample of 1–2 mm height melts at 151–152°C. The sample height is 3–4 mm, and the melting range is 151–155°C. Explain the second sample's wider melting point range. The compound's melting point is 153°

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter11: Liquids And Solids

Section: Chapter Questions

Problem 11.90QE

See similar textbooks

Similar questions

Metallic barium has a body-centered cubic structure (all atoms at the lattice points) and a density of 3.51 g/cm3. Assume barium atoms to be spheres. The spheres in a body-centered array occupy 68.0% of the total space. Find the atomic radius of barium. (See Problem 11.93.)
Examine the nanoscale diagrams and the phase diagram for Question 112. Match each particulate diagram (1 through 7) to its corresponding point (A through H) on the phase diagram.
3. What is the normal melting point of the substance?4. What phase(2) will exist at 1 atm and 70 degree Celcius?
What are Liquid Crystals?
Consider the phase diagram shown below: (a) Identify the different phases that occur in each region of the phase diagram. What is the value of the normal melting point and the normal boiling point for the compound? Identify the triple point and the critical point on the phase diagram. (b) If the dashed line at 1 atm of pressure is followed from 100 to 500 °C, what phase changes will occur (in order of increasing temperature)? (c) What phase changes will occur if the pressure is decreased to 0.100 atm?
How is X-ray crystallography similar to microscopy? How is it different? Why does the technique of crystallography require crystallization?