Question 19 (1.5 points) BONUS QUESTION - A student set up the galvanic cell, shown below, and measured the potential of 1.0 M fresh solutions at various temperatures. The data table of the cell potential at each temperature is found below. This question requires you to determine three numerical answers to be entered in the three boxes below. First determine AHO, then AS° and finally AG° at 25 °C. All answers should be in units of Joules. Important: no scientific notation permitted by D2L AH° and AG° must be answered to 3 significant figures. For example, an answer of +95563 J/mol for AH° would be entered as 95600 (no units in D2L). •AS° must be answered to 2 significant figures. • AS° must be answered to 2 significant figures. A(s) B(s) KNO3 A2+(aq) Temp (°C) Ecell (V) 10 1.039 20 1.043 30 1.048 40 1.053 50 1.057 60 1.062 B2+(aq) Hint: refer to your data & formula sheet to find how these variables might be related. CHEM 203 Formula Sheet 1 Periodic Table Fall 2020 18 8A IA 2 2 13 H 2A ЗА 25 14 15 16 17 He 4A SA 6A 7A 4.003 100 3 Li 4 6 9 30 Be B C N 0 F Ne 6.941 9012 30.81 12.01 14.01 1600 19.00 20.18 12 33 14 15 16 17 18 Nal Mg 3 4 5 9 8 00 9 10 11 12 Al Si P S а Ar 22.99 2431 28.09 3097 32.07 35.45 39.95 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 K Ca Sc Ti V Cr Mn Fe 8 Co Ni Cu Zn Ga Ge As 21 Se Br Kr 39.10 40.06 44.96 47.3 5094 52.00 54.94 5585 3893 58.69 6355 65.38 6072 72.59 74.92 78.96 79.90 380 37 38 39 40 41 42 43 44 45 46 43 48 20 50 51 53 52 54 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe 3547 87.62 891 91.22 9291 95.94 (98) 1011 1029 1064 3079 1124 1148 11X7 1218 1276 1269 1313 55 56 57 72 73 74 75 * Cs Ba La = Hf Ta W Re Os F± 77 75 79 82 83 M 85 16 Ir Pt Au Hg T Pb Bi Po At Rn 1329 3373 138.9 1809. 1819 1862 1902 1922 1951 1970 200.6 3044 207.2 3090 (209) (10) (22) 104 105 106 107 108 109 130 Fr Ra Ac Rf Ha Sg Ns Hs Mt Uun Uuu (223) 2260 (227) (261) (262) (263) 062) 065) (266) C73) Lanthanides* 58 99 90 62 62 63 64 65 66 ST 68 71 Ce Pr Nd Pm Sm Ea Gd ть Dy Ho Er Tm Yb Lu 3 1401 1409 1442 (145 1504 1520 1573 1589 1615 1649 1673 1689 1710 Actinides ** 90 91 92 93 94 95 97 " 99 100 101 102 103 Th Pa U Np Pu Am Cm Bk Cr Est Fm Md No Lr 2120 2310 2380 2370 40 043) 04 (47) 291 29 (257) C25) (259) (360) Song acid HCL, HB, HI, HNO, ISO, CEO, HCIO, Strong bases Hydemides of Group 1 (Lito Ca) and Group 2 (Ca, Sr. Ba) Constants: Avogadro's number: NA-6.022 x 10 mol Gas constant, R-0.08205 L-atm mol-K Faraday: F-9.6485x10 C/mol electrons 8.314 kPa L-mol K -8.314 J-mol K K-100x10 at 298K PV = nRT AU=q+w q=mCAT AU Wpy -PAV=-Angas RT AH-PAV A,H° =Σn,A,H°prod. -Σn,AH react. AG AH-TAS AG AG+RT In Q AG-RT In K = A,G Σn,AG prod. -Σn,A,Greact. Conversion factors: 1J-1 kg-m²-2 IL-10 m³ TIKI TI°C]+273.15 1 Pa 1 kg-m2 1Latm-101.3J 1 atm 760.0 torr 101.3 kPa 760.0 mm Hg 1.013 bar 1C-1J/V 1A-IC/S For ax² + bx + c=0: = Ex = mv² -b±√√b2-4ac x= 2a Kw = KaKb [A]=-kt +[A]o pH=-1 -log[H3O+] [A In[A] = =-kt + In[A]o pH = pKa + log [HA] 1 1 =kt + [A]e A. [A]o -Ea k = Ae AG = -n,FE 4,5 =Σp Sprod. -Σn, Sree react. In ()=(一) Ecell Ecathode - Eanode RT E = E°-In Q n₂F