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A solution of Na2S2O3 is standardized io...

A solution of `Na_2S_2O_3` is standardized iodimetrically against 0.1262 g of `KBrO_3`.This process requires 45 mL of the `Na_2S_2O_3` solution.What is the molarity of the `Na_2S_2O_3`?

A

0.2 M

B

0.1 M

C

0.05 M

D

0.1 N

Text Solution

Verified by Experts

The correct Answer is:
D
`overset(2+)(Na_2S_2O_3)+overset(+5)(KBrO_3)toBr^(-) +overset(+2.5)(Na_2S_4O_6)`
`v.f=1 " " v.f=6`
by m.e. of `Na_2S_2O_3`=m.e. of `KBrO_3`
molarity of `Na_2S_2O_3=0.1` M
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