The reason for the observation of the range of melting point rather than an exact melting point should be determined. Concept introduction: The melting point of a crystalline substance is the temperature at which the substance starts changes into the liquid phase. Melting point is directly associated with the presence of intermolecular forces like hydrogen bonding, dipole-dipole interactions. High molecular symmetry, large surface area, polarity is associated with high melting points. A pure compound melt at a narrow range and compounds with impurities have a wide range of melting points. Melting points are determined by filling the organic compound into the capillary tube with one end sealed.

Question

Want to see the full answer?

Answer 1

Question

Chapter 14, Problem 2Q

Interpretation Introduction

Interpretation:

The reason for the observation of the range of melting point rather than an exact melting point should be determined.

Concept introduction:

The melting point of a crystalline substance is the temperature at which the substance starts changes into the liquid phase. Melting point is directly associated with the presence of intermolecular forces like hydrogen bonding, dipole-dipole interactions. High molecular symmetry, large surface area, polarity is associated with high melting points.

A pure compound melt at a narrow range and compounds with impurities have a wide range of melting points. Melting points are determined by filling the organic compound into the capillary tube with one end sealed.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Compound X was dissolved in a 5-mL volumetric flask. A 1.00-mL aliquot of the compound was placed in a 10-mL volumetric flask and diluted to the mark. The solution was read in a UV-Vis spectrophotometer and an absorbance of 0.427 in a 1.000-cm cuvette was observed at 340 nm. Solve the following question. Data for Compound X:Molecular mass = 292.16 g/molMolar absorptivity (ɛ) at 340 nm= 6130 M -1 cm -1 1. What was the concentration of compound X in the 5-mL flask?

You wash a separatory funnel with soap and water to ensure it is clean before extracting an aqueous solution with dicholormethane. You should take the time to make sure there are no drops of water left inside the separatory funnel. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a True False

Compound X was dissolved in a 5-mL volumetric flask. A 1.00-mL aliquot of the compound was placed in a 10-mL volumetric flask and diluted to the mark. The solution was read in a UV-Vis spectrophotometer and an absorbance of 0.427 in a 1.000-cm cuvette was observed at 340 nm. Solve the following question. Data for Compound X:Molecular mass = 292.16 g/molMolar absorptivity (ɛ) at 340 nm= 6130 M -1 cm -1 a. Calculate the concentration of compound X in the cuvette. b. How many milligrams of compound X were used to make the 5-mL solution?