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12 Cards in this Set
- Front
- Back
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Color of HgS |
Black |
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Color of PbS |
Black |
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Color of Bi2S3 |
Brown |
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Color of CuS |
Brown |
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Color of CdS |
Yellow |
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Color of As2S3 |
Yellow |
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Color of SnS |
Buff |
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Color of Sb2S3 |
Orange |
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How to separate group IIA from IIB? |
Add (NH4)2Sx and equal volume of water. Heat and stir. IIA will remain as ppt while IIB will become soluble |
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What to do after separating IIA from IIB? |
Add dilute HCl to the solution from the last step and check color of ppt. White = sulphur so no group IIB. Any other color = proceed to group IIB separation |
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Soluble products of ammonium sulfides with group IIB |
(NH4)3AsS3 and SB (NH4)2SnS3 |
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What to do after adding (NH4)2Sx? |
Add equal volume of water, heat and stir |
