In the preparation of potash alum, from saturated solutions of K2SO4 and Al2(SO4)3,dilute sulphuric acid is added to Al2(SO4)3 crystals while preparing its saturated solution. This is due to
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a
prevent hydrolysis of Al2(SO4)3
b
make the solution more saturated
c
speed up crystallization
d
increase the solubility of Al2(SO4)3
answer is A.
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Detailed Solution
To prevent the hydrolysis acidic condition required