for the motion 2 H, (a), (g) - 2 Hot enthalpy of formation H0, 2015 od 18 motoros Handhi And the standard copy of Hot Ho

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For The Motion 2 H A G 2 Hot Enthalpy Of Formation H0 2015 Od 18 Motoros Handhi And The Standard Copy Of Hot Ho 1 (8.74 KiB) Viewed 36 times

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for the motion 2 H, (a), (g) - 2 Hot enthalpy of formation H0, 2015 od 18 motoros Handhi And the standard copy of Hot Hogar 02051891 and 18. Molte pectively O Predid the signal tropy change for the reaction it is the reaction spontaneous 293 The decomposition of drogen peroxide to care and water fordel recinto hours for the concentration of it does trom 0 to 035 M How many howed to the concentration to dea 040 00:10 M
(a) For the reaction, 2 H2 (g) + O2 (9) 2 H20 (1), enthalpy of formation Hº are 0, 0, -285.8 and -241.82 kJ/mol for H2, O2, H20 (1) and H2O (9) 02 9 respectively. And the standard entropy S°(J/mol.K) of H2, O2, H20 (1) and H20 (g) are 130.68, 205.14, 69.91 and 188.83 J/mol.K respectively. (0) Predict the sign of entropy change for the reaction (ii) Is the reaction spontaneous at 298 K? (b) The decomposition of aqueous hydrogen peroxide to gaseous oxygen and water is a first-order reaction. If it takes 6.5 hours for the concentration of H2O2 to decrease from 0.70 to 0.35 M, how many hours are required for the concentration to decrease from 0.40 to 0.10 M?