Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
63 views
in Chemistry by (92.4k points)
closed by
Describe the following : - (i) The role of cryolite in electro metallurgy of aluminium.
(ii) The role of carbon monoxide in the refining of crude nickel.

1 Answer

0 votes
by (92.6k points)
selected by
 
Best answer
(i) In the metllurgy of aluminimum, purified `Al_(2)O_(3)` is mixed with cryolite lowers melting point of the mix and brings conductivity.
(ii) CO-forms a volatile complex (Nickel tetralabonyl)
`Ni +4 Co overset(300-350K)rarrNi(CO)_(4)`
the carbonyl is subjected to higher temperature so that it is decomposed giving a pure metal.
`Ni[CO] overset(450-41 K)rarrNi+4CO`.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...