Diagram (a) shows a solution of HCl and a base before the neutralization reaction. Of diag...

Diagram (a) shows a solution of HCl and a base before the neutralization reaction. Of diagrams (b)-(d), which represents the products of reaction when the base is sodium hydroxide and which represents the products when the base is barium hydroxide? Blue spheres = base, red spheres = H+ grey spheres = cations of the bases. Assume all the acid-base neutralization reactions go to completion.