Assuming that the proposed reactants are mixed in stoichiometric ratios, and at moderate concentrations, which of the following is least likely to represent an observable (e.g., gas evolution or precipitation) reaction? A) Ca²⁺ + 2 Cl- + 2 K⁺ + CO₃^2-→ ? B) 2 Na⁺ + CO₃^2- + 2 HC₂N₃O₂ → ? C) H₂S + Cu²⁺ + SO₄^2- → ? D) H₂SO₃ + Li⁺ + Cl- → ? E) Pb²⁺ + 2 NO₃^- + 2 Na⁺ + 2 OH- → ?

Question

Quizplus · Accepted Answer

H2SO3 is a weak acid and does not react with a weak base like LiOH to form an observable reaction.

Assuming That the Proposed Reactants Are Mixed in Stoichiometric Ratios