3.4 - 14 2 In a titration of a weak acid with a strong base...

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Unformatted text preview: 14 2 In a titration of a weak acid with a strong base, after the end—point, the pH of the resulting solution is controlled by the ' . a. remaining weak acid ' b. the resulting buffer. of the weak-£10151 c. the conjugate acid-29 the Weak e excess strong base. e. none of the above : " , and sconjngate base 15. What IS the value of AG" at 25°C for a reaction With Keq=1 8x10'5 J . a-e(smm'j’etywmW} @[8314 J )(289K)1n(1.8x105). .mole‘K 16 E In solubihty equilibria, the relationship of Q to KSP. is important because when 6) > //;g a precipitate forms when & 4 W512 all of the solute dissdlves and when Q: fig a saturated solution 13 formed. K 61 > W 3 Q .7 Ker Q < H53 ’SKSP, Q<Ksna Q;Ksp, lifi‘fionsider the two compounds below: 21101112 (K3533; Ox 10 ‘6) and (:11lo (Ksp=10“14)_ In a solution that 13 0.10 M Zn2 and 0.10 M Cd”, which will precipitate first as the hydroxide concentration is increased - c. neither, they are both very soluble fl 1".)- 1' ~17 - ... _. fa- _ ‘“I:L:&’;,r: fj.'.1“rl‘:j 32091:] [aw/t ' ill) ' “ #41092 / 2 i (on ._ 1 9}]mflsfi z , -, I” ~._~_s~.-—,‘:3 " 3” r 1, ”or 3 a}. " 1'1““? town /’ :‘jMDV-O -...
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