Question

PB Predicting the Acc ess a. Na Rational B. NICI Rationale e. Narco, Rationale: Instructor Approval (prior to completing Step 2) 2. For each of the three salts obtain about 20 ml of Ma n in a clean 50 ml beke Measure the pH of ench salt solution using the pH sensor and record below NaCHO: pH- NEC: pH- NaCospl - 3. Did the pH values confirm your predictions as to whether each salt is acidic, basic, or neutral Part Using pH to Determine the Value of Kn for Acetic Acid 1. Obtain about 20 mL of 0.05 M acetic acid in a clean 50 ml beaker. Record the pH- 2. Construct, label, and complete an ICE table. Calculate the equilibrium concentrations of all species Initial 1 Change Equilibrium Use these values to calculate the K, for acetic acid. Show all necessary calculations below

Answer 1

Part-B the salt which are formed by the reaction of weak and with strong base or strong acid with base undergo hydrolysis and make solution acidie or bask. And Conjugate acid of weak base or conjugate base of weak acid undergo hydrolysis- conjugate acid or base of strong aid s strong base do not undergo hydrolysis. a. Na C₂H₂O2 CH3COONa - CH3600" () + Nation) here C4₂ coo- undergo hydrolysis as it conjugate base of weak acid Cuzcoon. While Hat do not undergo hydrolys is as it conjugate acid of naon strong base. 1 CH₂ coo- (ap) + H2O ² CH₂ cool + on solution is basic Nhace NH4Clou) - Nua (ap) +u-(a) not undergo hydrolysis M44 (ap.) +420 Nu4 04 (al.) + Ht since 4t As what is produced so solution is acidic. conjugate acid of weak base NH3- [ N92.403 Na, coz (oro) co? +420 wat + Coz Cap.) Į hicos ton

solution is basic ao cozt undergo hydrolysis. а сълз. C436 - () +и, о ғ с Сизов - (4) +15 ° ооk to» - Би = (рка + (3 сt bКю) pka1 Сиз Cooh = ч.14 bkw = 14 с: 0-1 м (ч. 2ч +14+ №3 (о)) = 8-82 Бh = so basic Nhace Би = 2(рки - bь - од ) Рk, а ми = ч.39 са о-) м р» ( 14 - 4-74- ba to')) = 513 4 didi hoz + OH- C022 (ap) 4. Соз pu= (bka + bkw + log c) рка 1 и Coz = (0-32 Beoic Би з 1С (o -32 + 14+l+g (o-1)) = 1-64 : £ ри = = neura рия + heard pn > 7 basic ри <1 <uis ko Nan, o, Ph= 882 ри 77 Воје 4.5.12 ph<7 acidie Nhau ph 21 Вос ph = IEC N0,03