Question

I need help with all three questions please and thank you!

4. Consider the reaction: 2 SOX) + g) = 2 50 (8) A 2.0 L flask was filled with 0.0400 moles o. 00200 moles of O. At equilibrium 0.0296 moles of so, were found what is the equilibrium constant for this reaction? A) 2.556 x 10 + B) 3.664 x 10 C) 6.953 x 102 D) 9.964 x 102 E) 3.116 x 10 5. What is a conjugate acid-base pair for the following equilibrium? H2O(l) + HSO4 (aq) + H2SO (aq) + OH(aq) A) H2O is an acid and HSO, is its conjugate base. B) H2O is an acid and OH is its conjugate base. C) HSO4 is an acid and OH is its conjugate base. D) HSOis an acid and H SO, is its conjugate base E) HSO is an acid and H O is its conjugate base. . What is its 6- At 25 °C a solution has a hydroxide-ion concentration of 2.57 x 10M hydronium-ion concentration? A) 3.89 x 10 M B) 1.00 x 10-7M C) 2.20 x 10-M D) 4.94 x 10M E) 2.02 x 10-'M 7. At 25°C, what is the pH of a 0.056 M HCl solution? HCl is a strong acid. A) 1.04 B) 1.25 C) 10.6 D) 1.17 E) 14.6 8. A What is the pH of a solution prepared by dissolving 2.25 mol of chloroacetic acid, (HC H,O,Cl) in 1.50 L of water? For chloroacetic acid, K-1.4 x 10. A) 1.69 B) 2.27 C) 11.7 D) 1.34 E) 2.55

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Answer 1

250₂ (g) + O₂(g) → 2502 egg 0.04 mol 0.02mel I Initially: At especial equilibrium (0.04-3) (Dodge 30 - moles of so at equin briums 0.0296 mol x= 0.09 96 map. moly of sog at equilibrium = (0.0400- 0.0296) mol. 0.0104pmel a 5.28103 M 0.0104 mo 2 L I moles of o2 at equilibrium : (0.0200 - 0.0296 mol - 5.28 10-3 mel. 2.68103 m 5.2 x 103 mol 2 L [502] = 0.0296 m 2 - 0.0148M. K lequilibrim constant) = [303]2 {sg} x {g Page No.

К 3 115.6 2 2 6 2 3.6 x 162 IKE 3 116 103 d, ott) - ис () — И, 40, lea) + он-Том) 10. - conjugate and one profon. boue pair having a difference of 0 И, 40, -и, о — H, o4 + Mgo, s, коом эга бер, 4 ас ја и, ву. on is the the conjugate base of Ho.. 03.0, Croat bаtе g И, , (0) До кол са 4 or – й Cannot be. б) Сон1 = 2.54 x 108 м (on-7x [+7 : 10-14 :) (и+7 : 6-14 0 0 10-14 Гut1 2.sa ring - 34 87 хір-7 м Гн-7. 389 х м -- 0

[Hel2 = 0.056 Hol & acid & is indo a strong sons. it dissociate completely So, [H+] = 0.056 m pas - log (4) - 109 10.056) = 1.25 priz 125 ©