The Equation That Corresponds to the K_a for Boric Acid

Multiple Choice

The equation that corresponds to the K_a for boric acid is

A) B₄O₅(OH) ₄²sup>-(aq) + 5H₂O(l) b 4H₃BO₃(aq) + 2OHsup>-(aq) .
B) H₃BO₃(aq) + H₂O(l) b HB(OH) ₃⁺(aq) + OH^-(aq) .
C) (OH) ₃BOH₂(aq) + H₂O(l) b B(OH) ₄^-(aq) + H₃O⁺(aq) .
D) B(OH) ₄^-(aq) + H⁺(aq) b B(OH) ₃(aq) + H₂O(l) .
E) B₄O₇^2-(aq) + H₂O(l) b B₄O₈H^3-(aq) + H⁺(aq) .