Strong and Weak Acids and Acid Ionization Constant; The Acid Ionization Constant, \(K_\text{a}\) pKa values ; Summary; Contributors and Attributions; Etching of glass is a slow process that can produce beautiful artwork. Traditionally, the glass has been treated with dilute hydrofluoric acid which gradually dissolves the glass under it. 2) Q is a reaction quotient, which helps determine if a reaction will shift forward or backwards. As a system approaches towards equilibrium, Q approaches towards K. 3) The reaction will proceed to the right. 4) No, it is not at equilibrium. Since QhH3rQjM.