Question

According to the following reaction, how much energy is evolved during the reaction of 32.5 g B2H6 and 72.5 g Cl2? The molar mass of B2H6 is 27.67 g/mol B2H6(g)6 Cl2(g)2 BCI3(g) +6 HCl(g) AHorxn-1396 kJ O 238 kJ O 1640 kJ O 429 kJ O 1430 kJ O 3070 kJ QUESTION 2 0.5 points Save Answer The value of AH° for the reaction below is -1107 kJ: 2Ва (s) + O2 (g) — 2ВаО (s) How many kJ of heat are released when 5.75 g of Ba (s) reacts completely with oxygen to form BaO (s)? O 96.3 kJ O 193 kJ O 26.3 kJ 23.2 kJ 46.4 kJ оо

Answer 1

с ни (9) 82 M) 6 U g) 2 BC2 C) + 2.51 DH 1396 k 32.51 32.S 12-S 1174Smo 27.6 limiking reapend Jhen the ener t Ydeaucol = - 1396 ki encyt rueaucd = - 139 82 t02 mal hen Ycact 237 km DH = - 40 kj 2 Bao (s) 6.25 o.6418 mols - Ho kj ney ruaued Bа Ycact 2 mol he o o418 mal the tneny Ydcayd rad hcn 2 = 23.2 k (3 2 Co cg) 2 Co2 (g) ma Dи со су) -393. 1 Ima 2x D CoL) - 2 x Dnp co) 2 K-393. - 2 X -0. S 56C. y k Imol

ч wо () + cmgo Ca) ч ми, (3) S O t -uс ki lmol Ди Nи, (9) Dид оз (7) о Яо kilmo Nо Cа) Ди нао сиу 286 kiImal чх ои иg ) 6х отир ) - Дnyn чх ои(s) + - 5 XDн? -4х+46 -5 X0 6х - 2f6 3 чхqD 36о — 1716 F 184 - о -072 kj/m»/