Question

O98% |T-Mobile Wi-Fi 6:00 PM Name art Given AH (C0(g)-393.5 mole, A (CsHg)146.4 kJmole OHO)2418kmole and 10poin How much heat is evolved if 36.0 g Clto undergoes combustion an (a) constant pressure? (10 points) What volume of O:(g) is required in the combustion at 25°C and 1.00 atm if 9,818 kJ are evolved?

Answer 1

(a) Heat evolved = 3271.9 kJ

Volume of O₂(g) required = 587.5 L

. a) Combustion reaction of Cg Hiz G Hv2 89) + 802 g) — scq (9) + 6H20 Cg = Enolis pro cact sa Hijireactant's = 5mda Hy.co.g) + Gud ahj, H20c9) – Sm01 411, 6,9 - amo a Hj, Cshi (9) = 5mox(393.5 kJ/ml + 6 max (-241-8 kJ/mon) -8molxo - 1 ano x (-146-4 kJ/mon) = -1967.5 kJ - 1450.8% J -0 + 146.4 kJ = -3271.9 kJ (negative sign indicates Thus, heat evolved = [3271.9 kJ] b) 3271.9kJ is evolved when & endles g 0₂ (9) are used. So, moles of a required when 9818 kJ of heat is evolved = 8 and O₂ (g) xaror 3271.96] Now volume of a required = ART 25°C = 298.15 k) = 2400+ 0.0821 Lammonex 298.154 250GJ 7.00 ath = 1587.5 that heat is released . 8 mon 0₂ (9) x9818 kJ = 24.0 2010 (9) P