Questions
When a solution of sodium hydroxide is added in excess to the solution of potash alum, we obtain
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a
a white precipitate
b
bluish white precipitate
c
a clear solution
d
a crystalline mass
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Correct option is C
Potash alum is K2SO4.Al2SO43.24H2O Al2SO43 + 6NaOH → 2AlOH3 ↓ white + 3Na2SO4; AlOH3 + OH- → AlOH4- soluble complexSimilar Questions
Regarding the structure of Al2Cl6 (g) , false statement is
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