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1 L sample of impure water containing su...

1 L sample of impure water containing sulphide ion is made ammoniacal and is titrated with 300 " mL of " 0.1 M `AgNO_(3)` solution. Which of the following statements is/are correct about the above reaction?

A

`5.60 `

B

`560`

C

56

D

`0.56`

Text Solution

Verified by Experts

The correct Answer is:
C
Meq. of `H_(2)S = " Meq. of " S^(2) = " Meq. of " AgNO_(3)`
` = 16.50 xx 0.02 = 0.33`
`W_(H_(2)S)/17 xx 1000 = 0.33`
` :. W_(H_(2)S) = 5.6 xx 10^(-3)`
ppm of `H_(2)S = (5.6 xx 10^(-3) xx 10^(6))/10^(2) = 56`
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