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General Principles and processes of Isolation of Elements
medium
Which of the reaction is suitable for concentrating ore by leaching process?
A
$2 Cu _{2} S +3 O _{2} \rightarrow 2 Cu _{2} O +2 SO _{2}$
B
$Fe _{3} O _{4}+ CO \rightarrow 3 FeO + CO _{2}$
C
$Al _{2} O _{3}+2 NaOH +3 H _{2} O \rightarrow 2 Na \left[ Al ( OH )_{4}\right]$
D
$Al _{2} O _{3}+6 Mg \rightarrow 6 MgO +4 Al$
(JEE MAIN-2022)
Solution
$Al _{2} O _{3}+2 NaOH +3 H _{2} O \rightarrow 2 Na ,\left[ Al ( OH )_{4}\right]$ Leaching.
Standard 12
Chemistry
