Question

14. Calculate the pH of 26 x 102 M KOH. (1) 1241 (2)1550 (3)208 47 15. Calculate the H* ion cancentration in lemon juice having a pH of 2 40 (1)401 00 59 4.0-10-ง M (2) 250 M the [H'] in offee than in neutral water? manganese(l) cartonate (MncO] is 42x 10 M. What is Kap for this oompound? (3) 0.38 M 440x0M 16. The pH of coffee is approximately 5.0. How mamy times groater is (1) 200 (2) 100 (3)5.0 (4)14 (5)001 17. The molar sclubility of cartonaie (1) 4.2 x 10- (2) 8.4-10. (3) 3.0 x 10-1 (4) 1.8x 1c-" 18. Given the folowing K, values, which caton is the strongest acir (5) nre one above 1.7x 10 3x 10 9. Which one of tha following equations represents the ionization of a weak base in water? 20 Which one of the following equecus solutions la basi? (1) Nacos (2)KsO ()CI (4) CaBre 21. Which of the following yields a buffer solution when equal volumes of the two solutions are moxed? 22 Cansider a buffer 23. Assuming equal concentrations of conjugate base and acid, which one of the fallowing moxtures is suitable 24. 25.0 mL of a 0100 M solution of NHs is titrated with 0.150 M HCI After 10.0 mL of the HClI has been added 25. In which one of the following solutions will acetic acid have the greatest percent ionization? (3) O20 M NH, О 10 M KOH (21 0.10MNH.. and O 10 MKO, (1) 0 10MNHs and 0.10 M HCI (4) 0.20 M NH, and 0.10 M HCI soluton prepared from HOCI and NaOCi. Which is the nat ionic equation for the reaction that oocurs when NaOH is added to this buffer? (1) NBOH HOCI Naoci (1) CHC00:Na 1 CHsCOOH (K,-1.8 x 104) 14) NaNO! HNO2 (K. a buffer solution with an optrmum pH of 4.6-87 10e) 4 5 (3) NaOCI , HOCİ (Ka-3.2x 10, 10m) (2) NH, / NHaci (K. . 5 6 the resutant solution is (1) basic and before the equivalence point (2) basic and after the equivalence point (3) acidic and before the equivalence point (4) acidic and afher the squivalence point ( 1) 0.1 М СНСООН (2) 0.1 M CHC00H dissolved in O 1 M HCl (3) 0.1 M CHCOOH dissolved in 0.2 M HC (4) 0.1 M CHsCOOH plus 0.1 M CHsCOONa (5) 0.1 MCH COOH plus 0.2 M CHsCOONa Its un-onized form is red and its (1) green (2) red 10 26. Methyl red is a common acid-base ind cator. It has a K, equal to 6.3 anionic form is yellow. What color wou'd a methyi red sourton have at pH-78 (3) blue (4)yelow (5) coloriess (3)7.00 (4)9.00 27. What is the pH of a 1.00 x10 molar solution of NacI? (1)5.00 (2)6.00