Question

Which is a spectator ion in the reaction between these two solutions?

BaBr2(aq) + Na2SO4(aq) →

A. Br– (aq)

B. BaBr2(aq)

C. Ba2+(aq)

D. SO42–(aq)

Answer 1

Im not sure what it is but i will try

BaCl₂(aq) + Na₂SO₄(aq) = BaSO₄(s) + 2NaCl(aq)

Ba²⁺(aq) + 2Cl⁻(aq) + 2Na⁺(aq) + SO₄²⁻(aq) = BaSO₄(s) + 2Na⁺(aq) + 2Cl⁻(aq)

Ba²⁺(aq) + SO₄²⁻(aq)= BaSO₄(s)

Answer 2

The ionic reaction is

Ba2+ + 2 Br- + 2 Na+ + SO42-----> 2 Na+ + 2Br- + BaSO4.

Na+ and Br- are on both sides of the equation so they are spectator ions.

The answer is A Br- (aq).