Scantron x. You arc required in order to take this examination, to have your own

Question

Scantron x. You arc required in order to take this examination, to have your own n and calculator. You may mark and calculate on this exam but NOT the answers. PI watch your time. Exam & Scantron® with your name on both, MUST be handed in end of the assigned time. Cell phones can NOT be used for any reason. Laptops mai used to access the text and handouts but NO internet IS ALLOWED..The p^K, of acetic acid. CH>COOH, is 4.76. What is the value of the equilibrium constant A^,. for the following equilibrium? (The concentration of water in a dilute aqueous solution is 55 M]

Explanation / Answer

1) pKa = 4.76

Ka = 10^-4.76 = 1.74 x 10^-5

CH3COOH + H2O <--------------------->CH3COO- + H3O+

Keq = [CH3COO-][H3O+]/[CH3COOH][H2O]

Keq = 1.74 x 10^-5 / 55

Keq = 3.2 x 10^-7

answer : d )

2)

c ) CH3OH only the acid among all . so it is strongest

3)

d ) alkene base

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