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6 Nov 2019

Hydrogen peroxide decomposes spontaneously to yield water andoxygen gas according to the following reaction equation.

The activation energy for this reaction is 75 kJ

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Tod Thiel
Tod ThielLv2
22 Mar 2019

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The enzyme catalase efficiently catalyzes the decomposition of hydrogen peroxide to give water and oxygen. At room temperature, the reaction goes essentially to completion. (a) Using the heats of formation, calculate DHo at 298K for the reaction as written: 2H2O2 (g)à 2 H2O (g) + O2 (g) (b) Using the above reaction and data in the constants table, calculate the bond dissociation enthalpy (symbolized by D) for the O – O single bond in hydrogen peroxide. Hint: Construct a thermodynamic cycle. (c) The enzyme normally acts on aqueous solution of hydrogen peroxide, for which the equation is: 2H2O2 (aq)à 2 H2O (l) + O2 (g) What is the DHo at 298K for this process?

hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction 2h20->2H2O+O2. change of H= - 196 kj. calculate the value of q (kj) in this exothermic reaction when 4.00 g of hydrogen peroxide decomposes at constant pressure

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