If excess acid enters the blood, which way would the following reaction shift to counteract the increase in acidity? H₂CO₃ (aq) + H₂O (l) ⇌ H₃O⁺ (aq) + HCO₃⁻ (aq)
A) Shift to the left, favoring H₂CO₃ and H₂O
B) Shift to the right, favoring H₃O⁺ and HCO₃⁻
C) No shift, as the reaction is at equilibrium
D) Shift to the left and right simultaneously
E) Shift to the right initially, then to the left