3. The colorless solution of an unknown solid turned blue litmus red and emitted an odor of ammonia uponaddition of NaOH. A pale yellow precipitate was observed upon reaction with AgNO, and a white precip-itate was observedthe unknown from the list of possibilities in the Introduction to this experiment.uponaddition of Pb(NO.),. Bubbles were not evident upon addition of HCl. Identifyescribed. In this notatiAnode CathodeByBy ingof the anode comparment arewritten onleft and the componens of the cathode comparmentwnen on the right The componenn of the two half-cells are separated by a salt bridg represented by heahle verical line. The single verticallines represent the phase boundary berween the solid clecrode and the lonsolution This notion will beused to describe theactions you will study in this experimentaA pue) uopa Bpuodsaoo ad uopeppo ouhalf reactions, oneepresent the processes occuring a the anode and cathode ina voltaic cell as sepa

Answered: Image /qna-images/answer/2e1cb182-a7b1-4413-b034-d248c423ff2a.jpg

The colorless solution of an unknown solid turned blue litmus red and emitted an odor of ammonia upon addition of NaOH. A pale yellow precipitate was observed upon reaction with AgNO, and a white precip- itate was observed upon addition of Pb(NO,),. Bubbles were not evident upon addition of HCI. Identify the unknown from the list of possibilities in the Introduction to this experiment.

The colorless solution of an unknown solid turned blue litmus red and emitted an odor of ammonia upon addition of NaOH. A pale yellow precipitate was observed upon reaction with AgNO, and a white precip- itate was observed upon addition of Pb(NO,),. Bubbles were not evident upon addition of HCI. Identify the unknown from the list of possibilities in the Introduction to this experiment.

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter35: Spot Tests For Some Common Anions

Section: Chapter Questions

Problem 2ASA

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A solution containing a mixture of metal cations was treated as outlined. 1. Dilute HCl was added and a precipitate formed. The precipitate was filtered off. 2. H,S was bubbled through the acidic solution. No precipitate formed. 3. The pH was raised to about 9 and H,S was again bubbled through the solution. A precipitate formed and was filtered off. 4. Finally, sodium carbonate was added to the filtered solution. A precipitate formed and was filtered off. What can be said about the presence of each of these groups of cations in the original solution? Cation group Description Present in the original solution? Ag+, Pb?+, Hg3+ ,2+ form insoluble chlorides Bi3+, Cd²+, Cu²+, Hg²+, Pb2+, Sb3+, Sn²+, Sn++ Al3+, Co2+, Cr3+, Fe2+, Fe3+, Ni2+, Mn2+, Zn²+ form acid-insoluble sulfides form base-insoluble sulfides or hydroxides Ba2+, Ca2+, Mg²+, Sr²+ form insoluble carbonates Lit, Na*, K*, NH completely soluble Answer Bank unknown At least one of these ions was present. All of these ions were…
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