Question

2. Calculate AH (expressed in kJ/mol) for the following reaction based on the thermochemical information given: Na +Crce → NaCl AH ? Nas) + 2Cl2(g) → Nap + Cle AH = 230 kJ/mol Nag) + Cl → Na(+ Cl® AH = 147 kJ/mol Na(s) + Cl2(e) → NaCl) AH = -411 kJ/mol 3. Consider the reaction: 2HCl) + Ba(OH)2(aq) → BaCl(aq) + 2 H200 AH--118 kJ/mol a. Calculate the heat produced when 700.0 mL of 0.500 M HCl is mixed with 300.0 mL of 0.500 M Ba(OH)2. Note: One of the solutions is the limiting reagent. b. Calculate the final temperature if both solutions were initially at 25.0°C, and they were mixed together in a calorimeter with a heat capacity of 180.3 J/Cº Note: the density-specific heat capacity of the solutions is the same as that of water: d=1.00 g/cm' and C, -4.184 J/g."C.

Answer 1

ate te 1eactions as follous- Na () + cl)AH = 230 K/mo Na (s) tc, () in bock oard recton uacton watc the The enthalpy changas to negat ve din Na(o) + cll )AH --230 Kmd Na(s) t - Na (9) +C(9) AH147 K/moR Na(9)t clc) and tue ethalpy buckwarrd rection geaction te te in changes its g Na (o) t c () Na ()+C(9) AHE-14 7 KJ/moP Na (s) tCl () AH = -411 K3/m Nacl (s) Add tue Forations (cunl Na Cs) C () AH-230 Km of Na Co) t Cl(o) No (9) t ce-() Na () t ClC) 4H--14 7 Km Na(s) t ) Nack(s) AH =-411 K5/mot Nacl(s) A4-230- 147-411) K/mot Na (o)+ Ce(9) 788 K1mof AH 788 K/mot Theofs, the guuired tolution is