Question

1. Which of the following processes are spontaneous or non-spontaneous? a. 2 H2(g) + O2(g) → 2 H 0(2) b. Recharging a battery without plugging it in. C. Salt dissolving in water d. Freezing a popsicle at room temperature 2. For the following equilibrium constant values, indicate whether the process is spontaneous or nonspontaneous AND whether the value of ArxnGº is greater than less than or equal to zero by circling the appropriate response. Equilibrium Constant Value Is the reaction spontaneous or nonspontaneous? What do we know about Arxn Gº? K = 4.6 x 1016 Spontaneous Nonspontaneous ArxnGº > 0, <0. =0 K = 9.2 x 10-24 Spontaneous Nonspontaneous ArxnGº > 0, <0, =0 Explain why you chose your responses: 3. When Epsom salts, MgSO4.7H2O(3) dissolves in water, the solvation process is endothermic. What do we know about the entropy change of this process? Circle your response: Arxns > 0, <0, =0, >1. <1 Explain why you chose your response:

Answer 1

2202co) 2H20) Spontaneous when RemenberAs =-ve then t process is spstaneouo Tn above reactn As-ve due to two reacom On =-C32)S tew meles are 1-s ga to sld) ie disodet rdeved 9 Rechargng a bteny wtat plugng in non'sponteneouw These battene acts Hhey ane non-spotaeo Salt disoln e ssolning ptess has DGve ie 0 dnt due to 4H=-Ve md s-ve d)Freezing ekcholylie cell when Leing mchonged G hu pcess is Spontameons apsida at eom tanparatne non-spandanens Po psicle reezas at only o' Tns at reom tonparatun it emain t it is witnant eain a 2 Equilibnm Constent K= 46X 104 K=92x1024 non-spontebeo ponfaneons non- spoutaneous For this remember lain tble Reaction Non- spovefaneou4 4G kes くく」 3 Pissolution Maso4 7H0 in witr, the polvahon is andothemic This wincreane random nes of tem, tat d to Ligid orderde to dissorder tus AS0AS be possite f all endofemic reactiow