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CGP EDU Academic Team
Published on: August 14, 2026
Equal weight of Zn metal and iodine are mixed together and the iodine is completely converted to Zn I 2 . What fraction of weight of the original Zinc remains unreacted. (Atomic wt. Zn = 65)
Text Solution
Verified by ExpertsThe correct answer is:
B
Let x be the weight of Zn an 
initially.
By the equation, 
The initial number of moles of zinc and iodine is 
and 
moles respectively.
The number of moles of Zn at the end of the reaction is 
moles.
Fraction of Zn remained unreacted 
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