THERE ARE NO SECOND AND THIRD QUESTION IN THE QUESTION GIVEN
ANS:
AT 250C K=1.8*10^-11
AT 500C K = > 1.8*10^-11 DUE TO GREATER DISSOCIATION
answer questions 1-3 1. Find the equilibrium constant for the following reaction at 25 arn Mg(OH)20)...
(a) Determine the equilibrium constant of Mg(OH)2(s) dissolution at 25 oC. (b) For a solution containing 10-3 M dissolved Mg, at what pH will Mg(OH)2(s) precipitate?
to t o 10. What is the equilibrium constant of the following reaction at 25°C? 1(s) + 2LiBr(s) 22Lil(s) + Br2(1) AHO=162 kJ mol-1, AS7=61.1 J mol-1 K-1 AGO=143 kJ mol a) 4 x 10-29 b) 1 x 1025 c) 9 x 10-26 d) 3.2 x 102 e) 3.1 x 10-3 11. What is the equilibrium constant of the following reaction at 25°C? Mg(OH)2(aq) + NaOH(aq) + NaOH(aq) + Mg(OH)2(s) a) 1.78 x 1025 -Ox0.1 b) 5.62 x 10-26 c)...
Consider the reaction: Mg(OH)2 (s) = Mg(aq) + 2 OH- (aq) At equilibrium, a 1.0 L reaction vessel contains 5.3 moles of Mg(OH)2 and concentrations of 0.0080 M and 0.010 M of Mg and OH respectively. What is Kc for this equilibrium? Consider the reaction: N2 (g) + 3 Br(g) = 2 NBr) (g) At equilibrium, the concentrations of Nz and Bra are 0.34 M and 0.70 M respectively, and the concentration of NBrs is 0.090 M. What is Kc...
calculate the value of the equilibrium constant at 25 Celcius, for the reaction: HNO2 + OH- -> H2O + NO2- H3O+ and NO2-= 4.67 x 10^-3 M Ka of HNO2= 7.2 x 10^-4 M
3. At high pH, some metals precipitate as metal hydroxides. For cadmium, the equilibrium constant for the reaction is 5.5 x 1013 Cd" +20H' Cd(OH),(s) a. If the pH of the water is maintained at 8.0, what is the dissolved cadmium concentration in mg/L? b. What pH is required to meet a goal of 100 mg/L dissolved cadmium?
Question 25 1) Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium concentration of H2O(g) (3 marks) CH4(g) + H2O(g) = C,H,OH(g) ke -9.0 * 10 M [CH]eq=0.015 mol CH2OHjeq = 1.69 moll A) 9.9 x 10 mol L' B) 80. mol L' C) 1.0 mol L. D) 1.68 mol L' E) 0.013 mol L'
6. Calculate the equilibrium constant (K) for the following redox reaction at 25 ?C. Ecell = -0.71 V 2 Al(s) + 3 Mg2+(aq) --> 2 Al3+(aq) + 3 Mg(s
7. Write an expression for the equilibrium constant for this reaction Ca(OH)25) + 2H" (aq) 5 24,0() + Car"(aq)
What is the value of the equilibrium constant for the following reaction? Assume 25 C, ideal behavior CrOH2+ + H2O ⇌ Cr(OH)2+ + H+
(a) Write the expression for the equilibrium constant (Kc) (b) Find Kc, when the equilibrium concentrations for NOBr, NO and Br2 are 0.46 M, 0.1 M and 0.3 M respectively. Report to 3 Significant figures. (c) Find Kp for the abovementioned reaction at 25°C. (R=0.082 L. atm/mole.K) (d) Find Kc, for this reaction: NO(g) + 1/2 Br2 (g) <-> NOBr (g) 1. Consider this reaction to answer the following questions touteiluna ada se in contain yo. 2NOBr (g) 2NO(g) +...