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QAIPM-2012-Ch-1714: NEET 2012 Chemistry - Class 12 AIPM-2012-Ch-1714 Solution: Which one of the alkali metals forms only the normal oxide…
Which one of the alkali metals forms only the normal oxide on heating in air? Rb K Li Na
Multiple Choice Options
- A Al 2 O 3 + HF + NaAlF 4
- B Al 2 O 3 + CaF 2 + NaAlF 4
- C Al 2 O 3 + Na 3 AlF 6 + CaF 2
- D Al 2 O 3 + KF + Na 3 AlF 6
Step-by-Step Verified Solution
Alumina Al 2 O 3 before subjecting to electrolytes,
is mixed with fluorspar (CaF 2 ) and cryolite
(Na 3 AlF 6 ) which lower its melting point and make
it more conducting.