Question

a) 4.9 x 10'M b)24x10 M c)5.8x 1010 M )1.2 x 10 M 19. Which one of the following compounds will have the lowest molar solubility in pur water? b) CuS, Ksp 1.27x103 d) ZnS, Ksp = 1.6 x 10-24 a) PbS, Ksp 9.04 x 102 e) Al(OH)s, Ksp 3 x 1034 What is the molar solubility, i.e. [Fe , in a saturated aqueous solution of 20. Fe(OH)20) Fe(OH(s)Fe2+(aa) + 201H (ag), Ksp 4.87 x 101" a) 2.44 x 1017 M b) 1.62 x 1017 M d) 2.30 x 10 M c) 4.03 x 10 M 21. What is the reducing agent in the redox reaction shown below: Ni(s) + 2Ag+(aq) ㄹ Ag(s) + N (aq) b)Ni2+(aq) c)Ag+(aq) a) Ni(s) d) Ag(s) 22. What is E cel for the following reaction occurring in an electrochemical cell at 25 Pb(s) + Br2(1) ㄹ Pb2+(aq) +2Br (aq) Pb (aq)+2 e-Pb(s) E0.13 V Br0)+2e 2Br (aq) E-+1.07 v a) +1.20 V b+0.94 v c)-0.94 V d) -1.20 v 23. Calculate the AG rxn for the reaction shown below. 2 HNO,(aq)+ NO(B)- 3 NO (8)+ H2O0) -110.9 ΔGof(kJ/mol) 87.6 51.3 -237.1 a) -162.5 kJ b) +51.0 kJ d) +171.1 kJ c)-54.5 kJ 24. What are the coefficients that balance the following redox reaction? Fe3+(aq) + I. (aq) 12(s) + Fe(s) a) (1, 2, 6, 3) b) (3, 2,2,6) c) (6, 3, 2, 2) d) (3, 6, 2, 2) 25. What is the reduction half-reaction for the following overall galvanic cell reaction? Co (ag)+2Ags)- Co(s)+2 Ag (aq) a) Ag(s)+e Ag (aa) b) Ag (ag)+ e Ag(s)

Answer 1

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