Question 1
Describe the color changes when sulfur (melting point 113°C, boiling point 445°C) is heated from 25°C to 500°C? It turns from a yellow solid to a
◦ reddish brown solid and then into reddish brown liquid and then boils.
◦ straw colored liquid which turns dark reddish brown and then it boils.
◦ yellow liquid and then it boils.
◦ dark reddish brown liquid and then boils.
Question 2
The increased viscosity of molten sulfur at 160-195°C is due to the
◦ opening of the S
8 rings to give smaller S units.
◦ opening of the S
8 rings which then polymerize into long chains.
◦ merging of the S
8 rings to give interlocking S
8 rings.
◦ melting of S
8 to give discrete S
8 units.