Question

how do you solve these? I am stuck.

DUE AFTER COMPLETING LAB. ANSWER IN SPACE PROVIDED Determine the K, of the weak acid HX knowing that a 0.10 M solution of LiX has plH of 8.90. 1. Pyridine, C.H,N, is a weak base and reacts with HCI as folleows 2. C.H,N (aq)+ HCI (aq) CH,NH (aq) CI (aq) What is the pH of a 0.015 M solution of the pyridinium ion (CSH5NH+)? The K, for pyridine is 1.6 x 10-9. (Hint: Calculate the K, for the pyridinium ion and use it in the calculation.) Find the pH of a 0.30 M solution of sodium benzoate, NaC,H,O, K, for the benzoate ion, C,H,O,, is 1.55 x 10-1, 3. K, for nitrous acid, HNO, is 4.5 x 10. What is the value of K, for the nitrite ion, NO, 4. Identify the acids and bases which react to form the following salts: 5. a) ZnSO, b) KBr c) K,CO, Hydrolysis Reactions of Anions and Cations of Sal Fxperiment 4 Post-Laboratory Questions and Exercises DUE AFTER COMPLETING LAB, ANSWER IN SPACE PROVIDED. 1 Determine the K, of the weak acid HX knowing that a 0.10 M solution of LiX has pHH of 8.90 Pyridine, C.H.N, is a weak base and reacts with HCl as follows 2 +CI (aq) CH,NH (aq) C.H,N (aq) HCI (aq) What is the pH of a 0.015 M solution of the pyridinium ion (C5H5NH+)? The K, for pyridine is L.6 x 10-9. (Hint: Calculate the K, for the pyridinium ion and use it in the calculation.) +

Answer 1

Comment in case of any doubt.

x 'in ^ohiton inert . PH 8.9 = 4-pDH pOH= S: | Xreadls aus TCETOblu X(0) Hxla)0Hlag), K CH9DHD CX-J (1) HOM) 0.1 C: E (0-1-) 10.2 ol O. -11-2 14 -3 /.58X)0 - Ko -6 кь Cs NH) Zet at HO ai) GtN(ag) 21 1 0.01S ao ka s very Amal asnumring a0.0/S 6-25x106Ka 3.06 X10 013x)0 (u( O.O1S -9 pH-Jag306x17) CH0tJ 3.06vo M 3.5 C2 0(ag)+ OH) Inital At ogtibri Vymal 0 3 ЕHОJCO #оn] 6.82 x) M COHJ )n= 8.83 =5.166 PH= )Y- pOH= ly -0 4.5X10 Ka aud 3он - вом, atad H auid koH- Lae, (C) Кон -