Thermochemical Equations Practice Worksheet Key, Exercises of Chemical Thermodynamics

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+ Make Suve unis ae congpahiole. hee Honors Chemistry Thermochemical Equations Practice Workshect 1, Given that the reaction of Cyiamond + O2 > CO2 (gy has a AH of -395.39 J, what would you predict f AIT for 2 Cgiamond +2 O2 > 2 COsiy?_ Rat Was dudbled AH= 2(-395.39T) {e190. 16-1 . Given that the reaction of 2 Cg + 3 Hp @ + % O2 i) > CoH2OH a) nas a AH of -271.96 J 2] re : predict for the AH valuc of thedecompositionof CaH2OH 9)? Cy oversedl: : ‘De + = Iu 3. Given that the reaction of 2 Ti «+ 4 Cl) > 2 TiCly) has a AIL of. 1608: 4 ds pamela would you pre ict ~ to be the AH of the following reaction: TiCl4 q) > Ti+ 2 Clo i? eartim has 4. Given the following: A= | we Aout | 25 \ CHy (2) 20, (g)> CO2(g) +220 (1) AH = - 890 kI we a. Write the balanced thermochemical equation. .~~ b. Is the reaction exothermic or endothermic? exothermt Cc AKO ks age Wve - c. How much heat is given off by the:renctien-of 3.5 moles of CH? tts 4 Combi: react —4p | px 3 Syro\ Chy x mio | — ; | eee \ ye ene thevmi vmoequy tot d. How much heat is Waldo off by the reaction ofa sade oe C= 12S NBC x “rey = HSK e. How many grams of CH; are needed to release 2000 J of heat? ¥ab kd = &40,0007 - 2,095, 1a 9 so Dec = $40, 0005— mol OHA X lad al = 0,d4+g Chey 5. Given the following: rs sidh Che iy LFe PCO, > FeO; CO AH =+ 26.3 kT a. Write the balanced thermochemical equation. C | How) many grams of iron will be sn Sa 6-004 lol mel Fe x — eager SP mol Fe 2309 re d. Ilow much heat is absorbed for the production of bs 5 g of iron (III) ae Vv l SgfePsy —l_nillmals — 0.6 407 x 23 WJ > LOT 19. Bokealy » re Feb | en, ela KT | e903 LC