Sulfur Recovery Daily Question 2018.8.29
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Question: Describe the changes in the viscosity of sulfur and its physical form (appearance) as temperature varies. Answer: ① When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart, turning it into a linear structure; as a result, the viscosity increases. The viscosity reaches its maximum at 190°C. Upon further heating, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid at temperatures below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, again a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas at temperatures above 1000°C.
①When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart into linear chains, resulting in an increase in viscosity; the viscosity reaches its maximum at 190°C. As heating continues, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid at temperatures below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, again a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas at temperatures above 1000°C.
①When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart into linear chains, resulting in an increase in viscosity; the viscosity reaches its maximum at 190°C. As heating continues, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid at temperatures below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, again a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas at temperatures above 1000°C.
①When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart into linear chains, resulting in an increase in viscosity; the viscosity reaches its maximum at 190°C. As heating continues, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid at temperatures below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, again a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas at temperatures above 1000°C.
①When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart, turning it into a linear structure; as a result, the viscosity increases. The viscosity reaches its maximum at 190°C. Upon further heating, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid at temperatures below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, again a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas at temperatures above 1000°C.
①When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart, turning it into a linear structure; as a result, the viscosity increases. The viscosity reaches its maximum at 190°C. Upon further heating, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid at temperatures below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, again a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas at temperatures above 1000°C.
①When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart into linear chains, resulting in an increase in viscosity; the viscosity reaches its maximum at 190°C. As heating continues, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid at temperatures below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, again a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas at temperatures above 1000°C.
①When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart into linear chains, resulting in an increase in viscosity; the viscosity reaches its maximum at 190°C. As heating continues, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid at temperatures below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, again a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas at temperatures above 1000°C.
Answer: ① When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart, turning it into a linear structure; as a result, the viscosity increases. The viscosity reaches its maximum at 190°C. Upon further heating, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas above 1000°C.
①When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart into linear chains, resulting in an increase in viscosity; the viscosity reaches its maximum at 190°C. As heating continues, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid at temperatures below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, again a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas at temperatures above 1000°C.
①When sulfur is heated, its molecular structure changes. At 160°C, the rings in S8 begin to break apart, turning it into a linear structure; as a result, the viscosity increases. The viscosity reaches its maximum at 190°C. Upon further heating, the long chains start to break, and the viscosity decreases again. Liquid sulfur has the best flowability between 130 and 160°C. In sulfur vapor, the following equilibrium exists: 3S8 === 4S6 === 12S2. As the temperature rises, the equilibrium shifts gradually to the right; when the temperature approaches 760°C, almost all of it converts into S2. ②Changes in physical form (appearance): It is a yellow solid at temperatures below 112.8°C, a yellow flowing liquid between 112.8°C and 250°C, a dark brown viscous liquid between 250°C and 300°C, again a dark brown flowing liquid between 300°C and 444.6°C, an orange-yellow gas between 444.6°C and 650°C, a grass-green gas between 650°C and 1000°C, and a colorless gas at temperatures above 1000°C.