PS4 solutions

# PS4 solutions - PROBLEMS 1(a(b acids acids H 3 O HCN H 3 O...

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PROBLEMS 1. (a) acids: + 3 HO , HCN bases: CN , 2 HO conjugate pairs: + 3 , 2 HO ; HCN, CN (b) acids: 2 HNO , 2 bases: 2 NO , OH conjugate pairs: 2 HNO , 2 NO ; 2 HO , OH 5. (b) 24 HPO (e) + 23 Zn(H O) (OH) 9. (a) 4 11 0 M × ; 10 M × (b) 9 3.0 10 M × ; 6 3.3 10 M × (c) 1.0 M ; 14 1.0 10 M × (d) 13 2.5 10 M × ; 2 4.0 10 M × 15. rain water: +6 [H ] 3 10 acid rain: +3 [H ] 1 10 ratio = 32 0.3 10 3 10 ×= × 19. 3 HNO 0.786 mol/L 0.295 L 0.232 mol n = HI 5.00 g (1 mol/127.9 g) 0.0391 mol n = + [H ] = 0.271 mol/0.295 L = 0.919 M ; pH = 0.037 23. OH 13.0 2(0.200)(0.795) 0.643 mol 40.0 n =+ = [OH ] 0.643 mol/0.795 L 0.809 M == ; +- 1 4 [H ] 1.2 10 M ; pH = 13.91 25. (a) Ni(H 2 O) 5 OH + (aq) + H 2 O H 3 O + (aq) + Ni(H 2 O) 4 (OH) 2 (aq) (b) Al(H 2 O) 6 2+ (aq) + H 2 O Al(H 2 O) 5 (OH) 3+ (aq) + H 3 O + (aq) (c) H 2 S(aq) + H 2 O H 3 O + (aq) + HS - (aq) (d) HPO 4 2- (aq) + H 2 O H 3 O + (aq) + PO 4 3- (aq) (e) HClO 2 (aq) + H 2 O H 3 O + (aq) + ClO 2 - (aq) (f) Cr(H 2 O) 5 OH + (aq) + H 2 O H 3 O + (aq) + Cr(H 2 O) 4 (OH) 2 (aq) 31. (a) D > A > C > B (b) D 35. Orig. conc. weak acid = 2.00 g 0.114 176.1 g/mol 0.100 L M = × 3 [H ] 2.9 10 M ±− 5 (2.9 10 ) 7.6 10 0.111 K × ×

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CHAPTER 13 41. (a) [phenol] = (14.5 94.1)mol 0.173 0.892 L M = + 2 10 11
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## This homework help was uploaded on 04/08/2008 for the course CHEM 128 taught by Professor All during the Spring '08 term at UConn.

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PS4 solutions - PROBLEMS 1(a(b acids acids H 3 O HCN H 3 O...

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