Halogen Lab You will perform tests to determine the cation and anion. the other,
ID: 1030640 • Letter: H
Question
Halogen Lab You will perform tests to determine the cation and anion. the other, but not both. The list of possible anions is extensive. halides that were tested in the halogen lab Yor the final lab practicum you will be given a solid salt. It consists of an anion and a cation. It does not just include the e students that each have different anions but do not know their anion. They each he halogen tests. Fill out the tables below for each student. Rewrite the Imagine five perform all three of reactants if there is hal ho reaction. Then answer the questions on the back of this page. Adds Product 1 Product 2 Color after adding organic Student #1 anion Cla (aq) Cl (aq) Cl (aq) Cl ei Cl (aq I (aq) at Student#2anion Adds -Product! Product2 - olorafteradding organic Br (aq) Br (aq) r (aq) Bra (aq) I (aq) Student #3 anion | Adds | Product i | Product 2 | Color after adding organic I (aq) Cla (ay) ac aB Bra (aq) Ia (aq) I (aq) Product 21 Color after adding organic Producti ent #4 anion Adds NOs (aq) NO, (aq) Bra (aq) NO3 (aq) Stud Cla (aq) I2 (aq) ! Adds | Product 1 | Product 2 | Color after adding organic Student #5 anion SO,2 (aq) Cla (aq) (a) Bra (aq) I2 (aq) SO4 (aq)Explanation / Answer
This lab is based on displacement rxn of halogens,a halogen with a stronger oxidizing strength displaces lower oxidizing halogens from its solution.
order of oxidizing strength varies as follows:F2>Cl2>Br2>I2 (decreasing order)
All halide salts are colorless,but Cl2(aq) is pale green ,Br2(aq) is yellow,I2 (aq) is brown
so followin rxns possible:
Cl2 +2Br- --->Br2+2Cl- color change: green Cl2 to yellow Br2
Cl2+2I- ---->I2 +2Cl- color change :green cl2 to brown I2
Br2 + 2I- --->I2 +2Br- color change : yellow to brown I2
4NO3- +2Cl2 --->4Cl- +2N2O5 +O2 color changes from green to colorless
NO3- +Br2 --->Br- + BrNO3 yellow Br2 to colorless
3NO3- +2I2 --->3 I- +I(NO3)3 brown to colorless
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