CHEM 1A03 Study Guide - Final Guide: Acetylene, Joule, Structural Formula

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: Linda Davis

Document Summary

Please note this is not an exhaustive review and is not meant to guide all of your studying. Engineers designing a process to make ethene from ethane gas, c2h6, need to know the change in enthalpy of the reaction c2h6. C2h4 + h2 and have the following information a(cid:448)aila(cid:271)le to the(cid:373). Dete(cid:396)(cid:373)i(cid:374)ed h fo(cid:396) thei(cid:396) desi(cid:396)ed reaction. (cid:894) h = (cid:1005)(cid:1007)(cid:1012) kj/(cid:373)ol of etha(cid:374)e(cid:895: c2h6(g) + 3. 5 o2(g) 2co2(g) + 3h2o(l, c2h4(g) + 3o2(g) 2co2(g) +2h2o(l, 2h2(g) + o2(g) 2h2o(l) H = -572 kj: consider the boiling of bromine liquid. Is this reaction spontaneous under standard conditions a(cid:374)d sho(cid:449) p(cid:396)oof. (cid:894) g=-6kj therefore is spontaneous). I(cid:374) a (cid:272)losed (cid:448)essel at (cid:1007)(cid:1006)(cid:1011) c, (cid:373)etha(cid:374)ol gas, ch(cid:1007)oh(cid:894)g(cid:895), is fo(cid:396)(cid:373)ed (cid:271)(cid:455) (cid:396)ea(cid:272)ti(cid:374)g gaseous (cid:272)a(cid:396)(cid:271)o(cid:374) (cid:373)o(cid:374)o(cid:454)ide (cid:449)ith hydrogen gas. When the reaction reaches equilibrium, the concentration of carbon monoxide gas is 0. 079 mol/l; hydrogen gas is 0. 158 mol/l; and of methanol gas is 0. 021 mol/l.