Question

Part II: Estimating Heat of Reaction from ?Ho Find the value of ?Ho for the reaction H2O2 (l) ? H2O (l) + 1/2 O2 (g) from these values of ?Hof: H2O (l) = -286 kJ/mol H2O2 = -188 kJ/mol (show calculation) ?Ho _______ kJ/mol

          Part II: Estimating Heat of Reaction from ?H<sup>o</sup>
Find the value of ?H<sup>o</sup> for the reaction H<sub>2</sub>O<sub>2</sub> (l) ? H<sub>2</sub>O (l) + 1/2 O<sub>2</sub> (g)
from these values of ?H<sup>o</sup><sub>f</sub>: H<sub>2</sub>O (l) = -286 kJ/mol  H<sub>2</sub>O<sub>2</sub> = -188 kJ/mol
(show calculation)
?H<sup>o</sup> _______ kJ/mol

Part II: Estimating Heat of Reaction from ?H<sup>o</sup>
Find the value of ?H<sup>o</sup> for the reaction H<sub>2</sub>O<sub>2</sub> (l) ? H<sub>2</sub>O (l) + 1/2 O<sub>2</sub> (g)
from these values of ?H<sup>o</sup><sub>f</sub>: H<sub>2</sub>O (l) = -286 kJ/mol H<sub>2</sub>O<sub>2</sub> = -188 kJ/mol
(show calculation)
?H<sup>o</sup> kJ/mol

Added by Jonathan M.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

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Part II: Estimating Heat of Reaction from Î”Hr Find the value of Î”H for the reaction H2O(l) â†’ H2O(g) from these values of Î”Hf H2O(l) = -286 kJ/mol and Î”Hf H2O(g) = -188 kJ/mol (show calculation) Î”H = Î”Hf H2O(g) - Î”Hf H2O(l) Î”H = -188 kJ/mol - (-286 kJ/mol) Î”H = -188 kJ/mol + 286 kJ/mol Î”H = 98 kJ/mol