Can you answer part 2, 3, 4 on page 90 please? s. Tests on NaCI: In a small test

Question

Can you answer part 2, 3, 4 on page 90 please?

s. Tests on NaCI: In a small test tube, place a small quantity (about the siee of of a large pea) solid NaCl. Add 4 ml of distilled water and stir until all of the solid is dissolved. for the Nal As solution in Ste 1, use ml of this Nacl solution for each of the tests in a and b Record your observations in Table 8-1. Tests on NaF: In a small test tube, place a small quantity (about the size of a large pea) o solid NaF Add 4 mL of distilled water and stir until all of the solid is dissolved. As for the Nal Step 1, use -1 mL of this NaF solution for each of the tests in a and b. Record your observations in Table 8-1 Table 8.1: Part I: Experimental observations (Part I). Tests on Cl Water AgNo,(aq) Br Water there Mo ppt No ppt Nal ht areen No Color Do k red Clear red ppt No color yellowish NaBr White gebi No Cole there there' ppt NaF e tole there No ppt No PP t yellowi s) Whiteulan No color No color Orange Unknown s and Halides: Artiritu serie

Explanation / Answer

2. the blacked out boxes does not form any precipitate as the resulting solution is completely miscible into each other and thus no testes were performed on it.

3. presence of fluoride ion is confirmed by its reaction with AgNO3 solution.

With AgNO3 it forms a brownish-yellow precipitate of AgF,

Ag+ + F- ---> AgF (ppt)

4. Yes, we can easily distinguish between chloride, bromide and iodide by solely results of AgNO3 reaction. The three ions forms different color precipitate with Ag+ and thus are easily distinquishable.

AgCl (white)

AgBr (pale-yellow)

AgI (deep yellow)

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