Environmental Chemistry Assignment | Professional Essay Writers

Make solutions of Sn(II) and Pb(II) as follows:

– dissolve 2 g SnCl2X2H2O in HCI (10 mL of a 0.1 M solution); centrifuge and use the solution.

– dissolve 2 g Pb(NO3), in water (10 mL).

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perform the following tests:

(i) To small portions (about 1 mL) of each in individual test tubes, add a few drops of KMnO4 solution that has been acidified with a few drops of dilute (2 M) H2SO4 and observe. To a small portion of the Pb

(II) Solution in a test tube, add a couple of drops of concentrated (care!) HC1 and observe. Similarly but with a fresh sample, add a few drops of KI solution and observe.

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(III) To small portions of each solution in individual test tubes, add a few drops of Na2SO4 solution and observe.

(iv) To a small portion of the Sn(II) solution in a test tube, slowly add NaOH (2 M) dropwise with mixing until no further changes are observed. Observe the change(s). Get Chemistry Help Today