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Qualitative Analysis Group C Reagents Available 1-M (NH) SO, 1-M (NH)2CO 6-M NaO

ID: 909393 • Letter: Q

Question

Qualitative Analysis Group C Reagents Available 1-M (NH) SO, 1-M (NH)2CO 6-M NaOH 6-M NH3 6-M acetic acid (CH COOH) Dilute, Known Solutions of Ca*, Sr and Ba2* 6-M HCI Saturated Ammonium Oxalate solution Dilute, Known Solutions of Ca*, Sr and Ba*" Safety and Waste Disposal Some of Group C cations are toxic. The HCI, HNO, and NaOH are irritants. Avoid cont any is spilled or splashed on you. Wear eye protection at all times. As you perform the experiment, collect all waste solutions in a waste beaker. This mixtu the appropriate waste container. DO NOT POUR ANY OF THE SOLUTIONS DOWN Unknowns and Knowns Separate known samples containing Ca*, Sr2+ and Ba2* are provided for your use. Test

Explanation / Answer

dilute solution + ammonium oxalate solution --------> oxalate of Ca2+, Sr2+ and Ba2+ -------> add acetic acid scid------> Calsium oxalate will issolve -----> filter -----> solid residue contains Sr2+ and Ba2+ --------> ammonium sulphase solution ------> Ba2+ precipitated