Assertion :XeF4 may be estimated by titrating the I2 by reaction with KI. Reason: Equivalent weight of Na2S2O3 can be determined by iodimetric titration.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is true but Reason is false
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D
Assertion is false but Reason is true
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Solution
The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion XeF4+4KI⟶Xe+2I2+4KF
In this reaction two moles of iodine liberates and every mole of iodine requires two moles of hypo solution so total solution required is 4 moles. Reaction:
2Na2S2O3+I2→Na2S4O6+2NaI
So by titrating iodine we can estimate amount of XeF4.