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What Is the Sign of the Enthalpy of Reaction for the Reaction

Question 5

Multiple Choice

What is the sign of the enthalpy of reaction for the reaction:

P4O6(s) + 2 O2(g) + 6 H2O(g) →\rightarrow 4 H3PO4(s)
Assuming that all compounds are present in their most stable state at 25°C and 1 atm pressure?
What is the sign of the enthalpy of reaction for the reaction: P<sub>4</sub>O<sub>6</sub>(s) + 2 O<sub>2</sub>(g) + 6 H<sub>2</sub>O(g) \rightarrow 4 H<sub>3</sub>PO<sub>4</sub>(s) Assuming that all compounds are present in their most stable state at 25°C and 1 atm pressure? A) positive B) negative C) impossible to determine from the data


A) positive
B) negative
C) impossible to determine from the data

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