Which complete ionic equation best corresponds to the balanced molecular equation ?

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

Problem

Which complete ionic equation best corresponds to the balanced molecular equation (NH4)2SO4 (aq)+Ba(NO3)2 (aq)→2 NH4NO3 (aq)+BaSO4 (s)(\text{NH}_{4})_{2}\text{SO}_{4}\,(\text{aq}) + \text{Ba}(\text{NO}_{3})_{2}\,(\text{aq}) \rightarrow 2\,\text{NH}_{4}\text{NO}_{3}\,(\text{aq}) + \text{BaSO}_{4}\,(\text{s}) ? (a) Ba2+ (aq)+SO42− (aq)→BaSO4 (s)\text{Ba}^{2+}\,(\text{aq}) + \text{SO}_{4}^{2-}\,(\text{aq}) \rightarrow \text{BaSO}_{4}\,(\text{s}) (b) 2 NH4+ (aq)+SO42− (aq)+Ba2+ (aq)+2 NO3− (aq)→2 NH4NO3 (aq)+BaSO4 (s)2\,\text{NH}_{4}^{+}\,(\text{aq}) + \text{SO}_{4}^{2-}\,(\text{aq}) + \text{Ba}^{2+}\,(\text{aq}) + 2\,\text{NO}_{3}^{-}\,(\text{aq}) \rightarrow 2\,\text{NH}_{4}\text{NO}_{3}\,(\text{aq}) + \text{BaSO}_{4}\,(\text{s}) (c) 2 NH4+ (aq)+SO42− (aq)+Ba2+ (aq)+2 NO3− (aq)→2 NH4+ (aq)+2 NO3− (aq)+BaSO4 (s)2\,\text{NH}_{4}^{+}\,(\text{aq}) + \text{SO}_{4}^{2-}\,(\text{aq}) + \text{Ba}^{2+}\,(\text{aq}) + 2\,\text{NO}_{3}^{-}\,(\text{aq}) \rightarrow 2\,\text{NH}_{4}^{+}\,(\text{aq}) + 2\,\text{NO}_{3}^{-}\,(\text{aq}) + \text{BaSO}_{4}\,(\text{s}) (d) 2 NH4+ (aq)+SO42− (aq)+Ba2+ (aq)+2 NO3− (aq)→Ba2+ (aq)+SO42− (aq)+2 NH4NO3 (aq)2\,\text{NH}_{4}^{+}\,(\text{aq}) + \text{SO}_{4}^{2-}\,(\text{aq}) + \text{Ba}^{2+}\,(\text{aq}) + 2\,\text{NO}_{3}^{-}\,(\text{aq}) \rightarrow \text{Ba}^{2+}\,(\text{aq}) + \text{SO}_{4}^{2-}\,(\text{aq}) + 2\,\text{NH}_{4}\text{NO}_{3}\,(\text{aq})

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