An Aqueous Solution of Boric Acid Can Be Represented by the Equilibrium

question 67

Multiple Choice

An aqueous solution of boric acid can be represented by the equilibrium system: B(OH) ₃(aq) + 2 H₂O(l) ⇌ H₃O+(aq) + B(OH) ₄^-(aq)   [Ka = 5.6 × 10^-10]
What is the pH of an eyewash solution which is 0.0018 M in boric acid?

• A) 3.75
• B) 4.75
• C) 6.00
• D) 7.49
• E) 9.25

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