The concentration of iodide ions in a 0.193 M solution of barium iodide is ________.
A)0.193 M
B)0.386 M
C)0.0965 M
D)0.579 M
E)0.0643 M

Question

Quizplus · Accepted Answer

Barium iodide (BaI2) dissociates into one barium ion (Ba2+) and two iodide ions (I-) for each formula unit that dissolves. Therefore, the concentration of iodide ions will be twice the concentration of the barium iodide solution, making it 0.386 M.

The Concentration of Iodide Ions in a 0