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Worksheet: Chapter 6-7 1. Ammonia (NH,) burns in the presence of a copper catalyst to form nitrogen gas. -1267 k 4NH3 (g)+302
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1. Ans The huasto AHOS-1263 KJ 4N )20a1)) 2aly b0( from the balanud espatim, 4 ms ammono evfwed 1267 kJ, 4 -4X179Nt - 66 9 Nh4H-32.3--5594) J e +30,1kJ PhU2(s7+2(9) Pby () The thiat ealn 30.1 J Mation 2 a s 50(9) 4,(9)a0l) Guen that AHf f (9)=236.3 kAs (pndut) AH (ratanty) r 2935)ar(-285.) 2-(a24) k + X - - 1574- 51.6-453.4 kT md 599 kTmd = - Trug 4H - a599

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