When aqueous solutions of Na2SO4 and BaCl2 are mixed

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

Problem

When aqueous solutions of Na2SO4 and BaCl2 are mixed, a precipitate of BaSO4 forms according to the molecular equation Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2 NaCl(aq) Which ion or ions are spectators when the reaction is expressed as a net ionic equation? (a) Na

^+

only (b) Na

^+

and Cl

^-

_4^{2-}

and Ba

^{2+}

(d) Cl

^-

only

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