Passage I
The 4 common halide ions are fluoride (F-), chloride (C1-), bromide (Br-), and iodide (I-). A halide in solution can be identified by mixing the solution with various test solutions and observing the precipitates (solids), if any, that form.
Table 1 shows the results of mixing each of 4 colorless aqueous halide solutions with a colorless aqueous test solution containing calcium (Ca2+), silver (Ag+), thallium (T1+), or lead (Pb2+).
Table 2 shows the results of mixing each of 2 colorless aqueous solutions (A and B) with each test solution. Each of Solutions A and B is a combination of 2 of the halide solutions.
4. Suppose that Solution A and Solution B are combined to produce colorless Solution C. Based on Table 2, if Solution C is mixed with the Tl+ test solution, what will the result be ?
Your Answer is
Correct Answer is J
Explanation
A and B fuse to form C, so C has all the characteristics of A and B meeting Tl+