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Question
In a certain experiment, 0.1000mol of hydrogen gas reacted with 0.1000mol of solid iodine at a constant 1 atm pressure, producing 0.2000mol of solid hydrogen iodide and absorbing 5.272kJ of heat in the process. Which of the following thermochemical equations correctly describes this experiment?
A) H2(g) + I2(s) →2HI(s); 
Hº= -52.72 kJ
B) H2(g) + I2(s) →2HI(s); Hº= 5.272 kJ
C) H2(g) + I2(s) →2HI(s); Hº= -5.272 kJ
D) H2(g) + I2(s) →2HI(s); Hº= 10.54 kJ
E) H2(g) + I2(s) →2HI(s); Hº= 52.72 kJ
Answer
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