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Assertion (A): Concentration of H2O2 is ...

Assertion `(A)`: Concentration of `H_2O_2` is expressed in volume.
Reason `(R)` :Volume strength = Normality `xx 5.6`.

A

If both (A) and (R) are correct and (R) is the correct explanation of (A).

B

If both (A) and (R) are correct but (R) is not the correct explanation of (A).

C

If (A) is correct, but (R) is incorrect.

D

If (A) is incorrect, but (R) is correct.

Text Solution

Verified by Experts

The correct Answer is:
B
Both (A) and (R) are correct but(R) is not the correct explanation of (A).
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To a 25 mL of H_(2)O_(2) solution, excess of acidified solution of KI was added. The iodine liberated required 20 mL of 0.3 N Na_(2)S_(2)O_(3) solution. Calculate the volume strength of H_(2)O_2 solution. Strategy : Volume strength of H_(2)O_(2) solution is related to its normality by the following relation Volume strength (V)=5.6xx"Normality" (N) where, Normality =((meq)H_(2)O_(2))/V_(mL) According to the law of equivalence (meq)_(Na_(2)S_(2)O_(3))=(meq)_(I_(2))=(meq)_(H_(2)O_(2))

CENGAGE CHEMISTRY-HYDROGEN, WATER AND HYDROGEN PEROXIDE-Exercises (Assertion Reasoning)
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