A) \[7\]
B) \[12\]
C) \[6\]
D) \[24\]
Correct Answer: D
Solution :
Key Idea: General formula of alum is\[{{M}_{2}}S{{O}_{4}}\cdot M{{'}_{2}}{{(S{{O}_{4}})}_{3}}2\cdot {{H}_{2}}O\]where \[M\] is monovalent metal ion \[M'\] is trivalent metal ion \[\therefore \]In\[{{K}_{2}}S{{O}_{4}}\cdot A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\cdot x{{H}_{2}}O,\,\,x=24\]You need to login to perform this action.
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