cheat sheet for acid base that can help you prepare for exams, Cheat Sheet of Chemistry

Download cheat sheet for acid base that can help you prepare for exams and more Cheat Sheet Chemistry in PDF only on Docsity! Chem 122. Acids problem set Mar 19-24 Names: Oxtoby Chapter 14 Problems Acids 1) Which of the ap) can behave as Bronsted-Lowry acids in aqueous solution? NOx te Ho [ey HCIO W-Elsgr got + | [ClFO] <<) Neti \ HCO) 4 For each of the following acid/base equilibria, predict which side is favored in aqueous Guple solution containing only the listed species, spectator ions, and water. CRA bra agora t a. HN3 +HCO3 —C:00: + Ng (H2COs pKa = 6.35, HNs pKa = 4.63) ‘ pr s Nong aud brite vi L'b Wee N, Ke Kar von the otter i a pb QH + HsPOs == Hah Os + 20. banca” 2 HWe Ge, r TT ge base pushes 25 NN. Nat ee Nyt ra — HCO3'+HF (HF pK = 3.14) MyC03 a d. evo = CsHsO" + NHg* (CeHsOH pKz = 9.80, NHq* pKa = 9.25) 2 K> Kg @ Calculate the hydroxide ion concentration, [OH’], of an aqueous solution of 0.314 M 164-62 Co (a weak base with the formula C2HsNHz2). Kp = 4.3 x 10% A” “ts = ao” p= 2 Ke +04 HA GH Gueipetanbodae (GNZCH, UH, + Of -? E ORR = ce - ‘ea +X dee E xo3t4m AX eo Chem 122. Acids problem set Mar 19-24 Names: 4) One of your friends claims that they can calculate the pH of a buffer system without knowing the actual concentrations of the conjugate acid/base pair. Another friend disagrees, as the equation for calculating the pH explicitly requires concentrations. Who is correct? Explain, and show the math. CAT Pca ce nerd the rte, ‘ aot the aetoh tone s! locks A you knw The Cg |i brium redo. Pa Weal acid [bare , pie 1, OF Beall sully lrwk vind you ko knw baiheP abe. (4 K Spel) 5) Fora0.1M aqueous solution of each of the following Be is Shar a compound you could add to the solution below to make njugate acid/base buffer. Which solutions should maintain a basic (>7) pH? An acidic (<7) pH? a. ammonium bromide (pKa = 9.4) hot May Bee Hye? + ee add aywmnna On aud C4n) bare Sa ae b. CHsCO2H (pK; = 4.8) 20 ae tary CMC it Nae SS CHZ CK BY cl Cons base Na OAc . c. NazHPOg (pKp = 6.8) a eae Merle, Hpoy StOS ty Hr PO + OH rd y i” haek Cony acid In FOn 6) What is the pH of a 0.100 M solution of potassium benzoate (CsHsCOOK)? Ka =6.5 E-5 for benzoic acid. i QC. + Np (2, + ot \o- Te |Our 3, ° iS 7* * B O17 : 2x13 et2nucy , ~ Cony