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CH10_Page_15 - [cuswug[DH‘ 1[CHJNHI-D.479—x Kb = 3.6...

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Unformatted text preview: _ [cuswug ][DH‘] 1;! _ [CHJNHI] -D.479—x Kb = 3.6): 113—" aching for x we find: 34:: 1.3xl-{l'2 M =[cH-] ch=-log(1.3x1c'=}=1.9 pH=14.a—1.9=12.1 K=INH2NHJHIOJ1 = = 4 [WZNHEHHIQ] KamIDEJXKblNHENHZJ [fl.1'i'}[l.?x1fl } 10.66 = 2.9 x 11:1r1r This means that the reacticn is in favor of the left 13.68 (a) pH :9 T, hasic:H20(1] + C1042" (:1qu = HC204' (aq) + OH" {aq} ([1] pH = 1", neutral: 'Ca2+ is not an acid and ND]— is not a base (c) pH < 'i', acidic: CI-Iflkl'l-lg+ {aq} + Hzflfl) # 1-1301an + CHJNH2 (aq) (d) pH } 7", basic: HIGH} + POE—(21(1) x——" HPDf' [aqj + OH" [aq] (a) pH < T, acidic: FdH10)63+ (aqj + H200] # HJO” [aq] + Fcljl-I20]._JIZ}}-I2+ (ac) {a pH < 7, acidic: {35:15}:me + Hzflfl) ;‘ H3D*{aq} + C5H5N{aqj 10.71] (a) Ccnccntratian {mom—‘3. CH3NH3+ +Hzflfl}: CH3NH2 + me" initial {125 — U 0 change —x — +x +x {See Table 1&2 for Kb chHgNHg, the conjugate base flfCHaNH3+.) equilibrium [L25 — x — I I 309 ...
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