Chapter 4, Problem 6DQ

The exposed electrodes of a light bulb are placed in asolution of ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}$ in an electrical circuit such that thelight bulb is glowing. You add a dilute salt solution, andthe bulb dims. Which of the following could be the saltin the solution?

a. ${\text{Ba(NO}}_{\text{3}}{\text{)}}_{\text{2}}$    c. ${\text{K}}_{\text{2}}{\text{SO}}_{\text{4}}$
b. ${\text{NaNO}}_{\text{3}}$    d. ${\text{Ca(NO}}_{\text{3}}{\text{)}}_{\text{2}}$

Justify your choices. For those you did not choose, explainwhy they are incorrect.