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15 Nov 2019
In a science fiction, astronaut Diego needs to makea bomb to redirect the Ebes space station towards a new set of coordinates, changing its velocity. Given that he is an on-board chemistry scientist and they do not have any form of explosives or flammables to ignite the engine. Diego has to take thermodynamics into consideration. He decides to burn 12.0 g of pure sucrose inside a very sturdy glass jar that initiall;y contains 1OL of O2 gas at 1 atmosphere pressure and 298.15 K. The combustion produces water vapor and carbon dioxide gas. Assumed the combustion is completed and all gases can be considered ideal. If the oxygen is not completely consumed by sucrose some will be left in the jar after reaction takes place. The values of Cv are given (J/mol*K): CO2(g)-28.7 H20(g) 25.5, 02-21.0. Sucrose density is 1587 g per liter 1. What is the change in enthalpy for 12.0 g of sucrose cobustion reaction under standard conditions? 2. Astronaut Diego assumes that all the enthalpy change for the reaction is released as solely heat and used to heat the final gas mixture. What is the problem with this assumption? Please explain in terms of thermodynamics.
In a science fiction, astronaut Diego needs to makea bomb to redirect the Ebes space station towards a new set of coordinates, changing its velocity. Given that he is an on-board chemistry scientist and they do not have any form of explosives or flammables to ignite the engine. Diego has to take thermodynamics into consideration. He decides to burn 12.0 g of pure sucrose inside a very sturdy glass jar that initiall;y contains 1OL of O2 gas at 1 atmosphere pressure and 298.15 K. The combustion produces water vapor and carbon dioxide gas. Assumed the combustion is completed and all gases can be considered ideal. If the oxygen is not completely consumed by sucrose some will be left in the jar after reaction takes place. The values of Cv are given (J/mol*K): CO2(g)-28.7 H20(g) 25.5, 02-21.0. Sucrose density is 1587 g per liter 1. What is the change in enthalpy for 12.0 g of sucrose cobustion reaction under standard conditions? 2. Astronaut Diego assumes that all the enthalpy change for the reaction is released as solely heat and used to heat the final gas mixture. What is the problem with this assumption? Please explain in terms of thermodynamics.