Question

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0 Page < Example: Thermochemical Stoichiometry The electrolysis of water absorbs 286 kJ for each mole of liquid water decomposed into its elements. a) is this reaction exothermic or endothermic? b) Write the thermochemical equation. c) How many grams of hydrogen gas can be collected if 5,000. kJ of energy are absorbed? d) If 28.241 g of hydrogen gas are collected, what is the percent yield? MacBook Pro eed.instrue rses/19878 406892module item_id 524875

Answer 1

D it is endothermic reaclion because 386 65 of Energy absorbed b) H20 ~ He + LO2; AH = + 286 ks/mod c) if 286 kJ Energy Assorbed +298 Hz collected 5000 ks Energy, absorbed - 8 SODD = 34.94897 ts Calected d) if 28.241 8f H₂ gas is collected so 286 % heild = 28.241 x 100 34.965 = 80.767,