The Equilibrium Constant for the Acid Ionization of Mercaptoethanol (HSCH₂CH₂OH $\times$

question 58

Multiple Choice

The equilibrium constant for the acid ionization of mercaptoethanol (HSCH₂CH₂OH ) is 1.91 $\times$ 10^-10. HSCH₂CH₂OH(aq) $\leftrightarrows$ H⁺(aq) + SCH₂CH₂OH^-(aq) .Which of the following is true regarding this equilibrium?
I.The reaction is product favored.
II.The reaction is reactant favored.
III.Equilibrium lies far to the right.
IV.Equilibrium lies far to the left.

• A)I and III
• B)I and IV
• C)II and III
• D)II and IV
• E)None are true,as the concentrations of reactants and products are comparable.

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