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.

5. Based on Tables 1 and 2, which 2 halide ions are NOT present in Solution B ?

Answer and Explanation

Your Answer is

Correct Answer is D

Explanation

Combining the information of Table 1 and Table 2, it can be concluded that B contains F- through the first column and second row of Table 2, and B contains Br through the third column and second row >-, and therefore do not contain the other two ions.