Answer Happy

Which has the strongest conjugate base? b. HCHO₂ a. HOCN ¢. HCH,Ó, d. HCH3O2 ¢. HCH3Oz Given initially equimolar solutions of each weak acid, which solution will have the LOWEST pH once equilibrium is established? a. HOCN b. HC₂H5O₂ 6. HCHO d. HC3H₂O₂ e. HCHO₂ _Given initially equimolar solutions of each weak acid, which solution will have the HIGHEST pH once equilibrium is established? a. HOCN b. HCH,O2 ¢ HCHO d. HCHO, e. HCHO₂ Which acid-base reaction results in an acidic solution? a HNO)(aq) + CsOH(aq) → H₂O()+CsNO)(aq) b HI(aq) + LiOH(aq) → H₂O()+ Lil(aq) + HBr(aq) + NaOH(aq) → H2O(0) + NaBr(aq) d HCl(aq) + NH,OH(aq) H₂O()+ NH4Cl(aq) e HF(aq) + LiOH(aq) H₂O()+ LiF(aq) Which of the following combinations would be best to buffer an aqueous solution at a pH of 9.04? a H₂PO4 and H₂PO4, Kat-7.5 x 10-³ b HNO₂ and NO₂, K₁=4.5 x 10- c CH₂CO₂H and CH₂COO, K₁=1.8 x 10-5 d H₂PO4 and HPO42, K₁2-6.2 x 10-⁰ NH4 and NH3, K₁=5.7 x 10-10 e