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img109 - 3,2 17 Given the following equilibrium constants...

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Unformatted text preview: 3' ,2 ' 17. Given the following equilibrium constants, N \‘l L11,» * ”to ’2' r ) 6 K2 (NH4t) = 5.6 x 10‘10 NO¢ + Mao Kb (N020 = 2.2 X 10'“ (30:1.00x1044) ‘7 ZHLO Z 1430* 2 0137’ determine the equilibrium constant for the reaction below at 25 °C. NH4*(aq) + N02'(aCI)fHN02(aQ) + NH3 (3‘1) '5 a. 1.2 x 10'34 b. 2.5 x 10'13 Q @ 12x 106 9? q. d. 8.1x 10S .00” ,, e. 3 9 x 1012 ~00“ 18. What ist \pH of 9.2 x 10'3 M aqueous cyanide ion? (K1, of CN‘ = 2.5 x 10’5) X1. a. 2.04 - / 2 12., b. 3.33 _ , 4 1810"“ ,4 c. 4.60 CN + Ago :2 0H 4 HCN d. 9.40 QZMD’BM 0M 6M .5:— ® 10'67 ‘ X *X +>< 4.3104: ‘41. 19. The s0.050 trimethylarnine is 11.24. What is the Kb of this base? - 21. 6.6x10-22 ‘ X= 4.74810 ‘1 b- 5-8xl0'” 4"; ' * 13.0 ’2 00' + 114.; 14.3 JEEAX P011: 3.21 © 6.3><10-5 O~O=SOM OM OM °' Yaw; )0 ‘0 d. 1.7><10'3 J +x 4»: 411.14 ‘ e. 2.76 am, x PF“: 11", Pow;-oq)f5u. 20. The pH of agueousO3OMhmochlorous ac1dI HClO, 15 3.99. What 1s the pK of thls acuf? 00’ 13’1 “‘2 C031") a. 3:: Ni— 3.” 000+ 07,02 ( 1130’ . cur km 1 [Mira-7’3““ = >< c. 10.01 C3303“ OFM 0:: b: vans-x u; 241091.101 d. 12.80 ' " ‘ :1 PM 7’40 e 13.30 0" 5‘ V 1, PH= "0301803., 46”? c. 0+ 5 . : 1. 01x1 “" ;x Q What 1s the RH of the solution which results from mixing 25 mL of 0 30MHFgagzand 25 mL of 0 30M Na at25 °C? K fHF= 7.2 104 ‘ g3??? ( o x H F-+ 011 ,7 ‘1: + ”1,0 ' -O‘L§L .o'LrL «b. 8.;6 Ami/L ”moi/L 5"]: .007140! . 1 7 o '=' c i) 86 / 'OOEIVS‘LWI uwfiflwl 'OO-UMOI / 03-,- . 12. 02 {2:}: What is the pH of the solution which results fro mixing 35 mL of 0.50 M NH3(aq) and 35 mL of 0. 50 HCl(aq)at25°C?(beorNH3=1.8x105) ..-— 0 I f“: + of] 0.60 ’ {mwbl b 2.67 ' "V ,: f c. 4.74 é ~34 «1. 4.93 1 .1834 k ‘A e 9.26 _ x1 ; ~126uEi 4 41",: AL ...
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