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Ethyne or acetylene is also used in cutting torches. The acetylene is combined with pure oxygen producing a flame with a temperature of 6332 °F or 3500 °C. The combustion of acetylene in the presence of excess oxygen yields carbon dioxide and water:

2C2H2 (g) + 5O2 (g) --> 4CO2 (g) + 2H2O (l)

Calculate the value of ΔS° for this reaction.


A. +689.3 J/mol K

B. +432.4 J/mol K

C. -432.4 J/mol K

D. -122.3 J/mol K

PLEASE NO BOTS lol Ethyne or acetylene is also used in cutting torches The acetylene is combined with pure oxygen producing a flame with a temperature of 6332 F class=

Respuesta :

The correct answer is

C. -432.4 J/mol K

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