2017_Quiz14_key - CHEM 1140 Quiz#14 E Name You must show of...

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CHEM 1140 Quiz#14 Saunders ** You must show ¡\!! of your work to receive 44y credit ** 1. (3 pt) Calculate the pH of a 0.053 M LiOH solution? Lioil --> L',|,s t o4í*t ö,O53$ ,D5sl^ ,D'slA ?o* . --loJ 6,1-1 7 --/oJ(ooss) = /, a.75 7 F*= lLl - ?aÅ Name E a "l¿c P l^c ¿S 2. (7 pt) Calculate the pH and percent dissociation of 0.065 M hydrofluoric acid (K^: I .2 x 10-a ) A UF a-¡tal /l*O é-- ¡¿ywr< F+1", Hl"u * rLrs ( Ð yo = ßrkl -Ll = 7.?*lo ' @ fr+ç1 yo = (,68 r/;'^ 2s*/o-í4 X7 + 7,2>./o4y * 4,Ug */o- * 7z*l -tJ o'î Q,z"t t+f - +ü\?4, b8 xt a a(t\ - 7axto4 I 5,/74*/o-7 + 1,87A *lo'q & - 7, ?nlo-'{
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