A chemist mixes equimolar amounts of Ba(OH)₂(aq) and H₂SO₄(aq)

CHEMISTRY · Single correct · A Level · Chemistry · Reactions of ions in aqueous solution · Reactions of ions in aqueous solution

Problem

A chemist mixes equimolar amounts of Ba(OH)₂(aq) and H₂SO₄(aq). Precipitation and neutralization both occur. Which of the following equations is the correct net ionic equation for the overall chemical change? (a) 2 OH−(aq)+2 H+(aq)  →  2 H2O(l)2\,\text{OH}^-(aq) + 2\,\text{H}^+(aq) \;\rightarrow\; 2\,\text{H}_2\text{O}(l) (b) Ba2+(aq)+SO42−(aq)  →  BaSO4(s)\text{Ba}^{2+}(aq) + \text{SO}_4^{2-}(aq) \;\rightarrow\; \text{BaSO}_4(s) (c) Ba2+(aq)+2 OH−(aq)+2 H+(aq)+SO42−(aq)  →  BaSO4(s)+2 H2O(l)\text{Ba}^{2+}(aq) + 2\,\text{OH}^-(aq) + 2\,\text{H}^+(aq) + \text{SO}_4^{2-}(aq) \;\rightarrow\; \text{BaSO}_4(s) + 2\,\text{H}_2\text{O}(l) (d) Ba2+(aq)+2 OH−(aq)+H2SO4(aq)  →  BaSO4(s)+2 H2O(l)\text{Ba}^{2+}(aq) + 2\,\text{OH}^-(aq) + \text{H}_2\text{SO}_4(aq) \;\rightarrow\; \text{BaSO}_4(s) + 2\,\text{H}_2\text{O}(l)

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