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A sample containing HAsO(2) (mol. Mass=1...

A sample containing `HAsO_(2)` (mol. Mass=108) and weighing 3.78 g is dissolved and diluted to 250 mL in a volumetric flask. A 50 mL sample (aliquot) is withdrawn with a pipet and titrated with 25 mL of 0.05 M solution of `I_(2)`. Calculate the percentage `HAsO_(2)` in the sample :

A

0.25

B

0.2

C

0.1

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
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NARENDRA AWASTHI-STOICHIOMETRY-Level 2 (Q.1 To Q.30)
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  14. 20 mL of 0.1 M solution of compound NaCO(3).NaHCO(3).2H(2)O is titrate...

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  15. A sample containing HAsO(2) (mol. Mass=108) and weighing 3.78 g is dis...

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  16. A mixture of FeO and Fe(2)O(3) is completely reacted with 100 mL of 0...

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  17. To a 10mL, 1M aqueous solution of Br(2), excess of NaOH is added so th...

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  18. 0.10 g of a sample containing CuCO(3) and some inert impurity was diss...

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  19. 1 mole of equimolar mixture of ferric oxalate and ferrous oxalate requ...

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