Question

Sample A contains 2 chemicals from the list below , and sample B three. How to I dentify them?

A) Chemical fromulas:

NaI MgCl2 CaCl2 Al2O3

K2SO4 NaCl KCl MgCO3

KI Na2So4 Na2CO3 CASO4

CaCO3 Al2(SO4)3 MgSO4 K2CO3

B) Here are the chemicals availble to help me to find out:

-Solid samples of each of the sixteen chemicals listed in the investigation report in labeled bottles.

-Phenopthalein and aluminon indicators (small dropper bottles).

-250 mL bottles of a 6 M and 1 M acids HCl(aq), H2SO4(aq), and CH3COOH(aq).

-250 mL bottles of a 6 M and 1 M bases NaOH(aq) and NH3(aq).

-250 mL bottles of 6 M and 1 M solutions of AgNO3(aq) and BaCl2(aq).

-250 mL bottle of 0.5 M solution of Na2SO4 (aq).

-250 mL bottle of 0.1 M solution of Na3Co(NO2)6 (aq).

-250 mL bottle of saturated CaO (aq).

-250 mL bottle of ethanol, CH3CH2OH (l)

C) Extra equipements available.

- 1 conductivity meter (light buble test apparatus)

- two pH meters

-Filter paper

-Centrifuges.

-CRC Handbook and Merck Index.

I started doing some research, but I am still confused on how to (step by step) indentify the two chemicals in the unknow sample A, and identify the third chemical contained in the unknown sample B containing the two previous ones from A and another one.

Be very clear and explain the different methods to find the chemicals separatly..

Thank you for your help.