Question

a)Why is cryollite added in the electrolysis of alumina ?
b) Phosphene has lower boiling point than ammonia. Why?
c) SiFl2_6 is known but Sici2_6 is not known. Why? ​

Answer 1

a. Instead, it is dissolved in molten cryolite – an aluminium compound with a lower melting point than aluminium oxide. The use of molten cryolite as a solvent reduces some of the energy costs involved in extracting aluminium by allowing the ions in aluminium oxide to move freely at a lower temperature

b. Phosphine has a lower boiling point than ammonia. ... PH3 has a lower boiling point than ammonia due to its inability to assorted via intermolecular hydrogn bonding. This is because phosphorus is bigger have bigger size as compare to nitrogen thus have weak bonding with hydrogen.

c. Sorry dont know...

Hope it helps☺

Answer 2

Answer:

75

Explanation:

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