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12. The [OH7m a 0.75 M pyridine (CsHsN?-17-10-9) solution is: a. 1.3109 M 0.75 M enone of these 3.6× 10-5 4.8 × 10-5 Al 1.3. Consider the reaction HNOzla) H:0DH(ap)+NOz (ag) Which species is a conjugate base? a HNOz(ag) b. H2O? c Ho (ag) d. NO2 (ag) e. Two of these 14. Which of the following is the equilibrium constant expression for the dissociation of the weak acid HOCi [HOCI] Hoa e. None of these 15. The highest plH for an effective buffer occurs when the base is how many times as concentrated as the aci a. b. 5 c. 10 d 20 e. 15 16. The concentration of OH in a saturated solution of Mg(OH)2 ?S 357 x 104 M.The Ksp of Mg(OH)2 a. 6.4x 10-8 b. 4.5 x 10-11 . 1.3 x10-7 d. 3.6x 10-4 e. 2.3x 10-11 ion for findine the melar solubility (s) of Sn(OH)2 is
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Answer #1

2 anud The awwenul④ [Hoa)

a bll Henderson -Hasselbalch eshiow atiol For a eerue buter thaie] should be

6 2t + 20H 2S 2 2. ト 2

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