Explain the following on the basis of HSAB principle: (i) Reaction between CdSO4 and Na, S. (ii) CoF3-ion is more stable than Col-ion
Answers
Answer:
i)CdSO4 (aq) + Na2S (aq) → CdS (s) + Na2SO4 (aq)
This is a precipitation reaction: CdS is the formed precipitate.
Reactants:
CdSO4 – Cadmium(II) sulfate source: wikipedia, accessed: 2019-09-27
Other names: Cadmium sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Sulfuric acid source: wikipedia, accessed: 2019-09-27, Cadmium salt (1:1) source: wikipedia, accessed: 2019-09-27... show more
Appearance: White hygroscopic solid source: wikipedia, accessed: 2019-09-27; White crystals source: ICSC, accessed: 2019-09-04
Na2S
Names: Sodium sulfide source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02, Disodium sulfide source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02, Sodium sulfide (anhydrous) source: ICSC, accessed: 2019-09-04... show more
Appearance: Colorless, hygroscopic solid source: wikipedia, accessed: 2019-09-28; White-to-yellow hygroscopic crystals with characteristic odour source: ICSC, accessed: 2019-09-04
Products:
CdS
Names: Cadmium sulfide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Cadmium(II) sulfide source: wikipedia, accessed: 2019-09-27, Greenockite source: wikipedia, accessed: 2019-09-27... show more
Appearance: Yellow-orange to brown solid. source: wikipedia, accessed: 2019-09-27; Light yellow or orange crystals or yellow-to-brown powder source: ICSC, accessed: 2019-09-04
Na2SO4
Names: Sodium sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Sodium sulphate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Sulfate of sodium source: wikipedia, accessed: 2019-09-27... show more
Appearance: White crystalline solid | hygroscopic source: wikipedia, accessed: 2019-09-27; White hygroscopic solid in various forms source: ICSC, accessed: 2019-09-04