Question

6.54. Hydrogen cyanide is used in the manufacture of clear plastics such as Lucite and Plexiglas. It is prepared from ammonia and natural gas (CHA). 2NH3(9) - 303 (9) + 2CH (9) + 2HCN(9) + 6H20(9) The reaction evolves 469 kJ of heat per mol of HCN formed. Is the reaction endothermic or exothermic? What is the value of q when 2 mol HCN forms?

Answer 1

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As the per mole of Exother mich reaction HN evolves 469 KJ of heat formed the reaction is for I mole of the formed a q= 469 55 for 2 moles of how framed -> 9=2x469 = 9 88 87 | 19 = 93865 as Notes the negalive value, as 'q' can be represented reaction is coothemic 1 q = - 938 55 per we as correct. requirement, both wo Ways are I absolutely