CW 17 - it; (2,.)— LM) Alsraéxti'w Class Worksheet 17 1....

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Unformatted text preview: it; (2,.)— LM) Alsraéxti'w Class Worksheet 17 1. Solubility Guidelines. - Group 1A (Na+ etc.), NH4+ and N03“ salts are all soluble. - +2 and +3 ions with CH", CO3'2 and 8'2 are not soluble. (2390.0; LA 4—%09JL Lg “9 slew/T11 Len—ml 0w“ «Hm. saw 1 splash. E-r "warm?! Aim Mai—ovals. Wat-S-JL-«Lie— 0"" 3&6“);— o 804“2 salts are mostly so uble. ngkugims H LIL-— 1.47%» 21:! 5.4%“ are mt La/“J “(M/“1° 0 Ag+ salts are mostly not soluble. . ,i , 039m,“ 2. NIE for PreccipltatioIislipl’t-etlfli'jitioil‘s)?NL-1 b w H PXL‘LL’PL'iCsitggA ’ ‘4' &n\‘cm Sali— LfiL-r— .90?”- I -—r\M;.\L \‘ow-l g ‘. o Ba(N03)2 (aq) agNa2COijaq) L # 1 4L C0 Bo- M M» E L... a MgClz (aq) and NH}; (aq) M342. (1.. 3. Complex Ion Equilibrl . uh PrLU—H-‘ral;~, Ref—Barn“ Cow. due—Laws 343‘ka- o F+3 + :‘SCN' 4;» I: Saw +3— : -¢i 02" 1-?- 3r oN1+2+gNH3_g-_, NLOVH K4,_:5‘:5’><lo am 4. Calculation Using Kf: Calculate [Ag+] for a solution in which [NH3] = 0.10 M and [Agm'H3) 2+] = 0.10 M (both “at equilibrium”). Ag+ + 2NH3 47—» AgWH3)2+. Kf=l.6x107 K3, :. [flgQWzDfl :1” oaIM ___ texts” ' 5%“? [W2]; “aijwdfl ' N M O‘i w NHZDW 416+" t, 1.éx‘?1_x(lo__bzsf ‘ ‘7“ 5. Thermodynamics —- The study of whether a reaction should 30, based on energetics and other factors. SLOM : .2“. E ;_ a gram Mu I are 0.!» o 5700 w A. Energetics: H _ r 1 l H _ AH L; Art A E'— Ma-w at t aw PEI w o Calculating AH: AHrgm° = Z AHf’ (products) - 2 AHf° (reactants) where AHf° (elements in normal room temperature form) = 0 ‘°“ = DJ: M Eta-“MA - Predicting the sign of AH: 1 M _. “1/ “BOAL Lewd-“M {:3 Mia—H‘de FM' (“1, [wa-o agac-‘L M‘r _ “abuts; CKHVQ, exec—Jaw; o Somett‘l’iriugs that AH can’t explain! a“ NH4N03 (s) ——+ NHisi+ (an + NO3'(aq), AHrm° = awe, Qs’ k3)-r-e’ NaCl (5) —> Na+ (aq) + (:1— (aq), AHrmo = .t L4 when e“th D: g 2t. mat“ S!“ “44" B. Entropy: S I Y‘me ‘ “that” .JAMMMMG°’+G‘WL_JW “VI: '1 a" K 11 “$- H- ‘ - mm‘) 4‘ m Enqfi;W%éfi>Sm-PWL£WOL r, - Calculating AS: ASrm" = 28° (products) 32 8° (reactanIS) p (a 7%; 3;! -»K'- 32w. wJQJleL’ 3/ 3 Luz—J17); O o Predicting the sign of AS: 3(g) > 3(1) z S(aq) > 8(3) 3 0 . . as W h‘b libfl (fig. Div-bo‘zq OIL“ ‘9“3 “1%” Msmfim mqu a fin fl 1 2C(s) + 02ng —-—> 2C0(g), AS“ = + 179 J/molK 24 1121—: ‘ C(S) + 09(2) ——b- COofgl AR° = 1 Urnan l w 'l 1 C ...
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CW 17 - it; (2,.)— LM) Alsraéxti'w Class Worksheet 17 1....

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