Home
Class 11
CHEMISTRY
50 mL sample of ozonised oxygen at NTP w...

50 mL sample of ozonised oxygen at NTP was passed through a solution of potassium iodide. The liberated iodine required 15 mL of `0.08 N Na_(2)S_(2)O_(3)` solution for complete titration. Calculate the volume of ozone at NTP in the given sample.

Text Solution

Verified by Experts

Reactions involved may be given as :
`2KI+H_(2)O+O_(3) to 2KOH+I_(2)+O_(2) uarr`
`I_(2)+2Na_(2)S_(2)O_(3) to 2NaI+Na_(2)S_(4)O_(6)`
1 mole `O_(3)=2 mol e Na_(2)S_(2)O_(3)`
No. of moles of hypo `=("Mass")/("Molecular mass "(158))`
`(ExxNxxV)/(1000xx158)`
where, `E_(Na_(2)S_(2)O_(3))=158, N = 0.08, V=15`
`therefore` No. of moles of hypo `=(158xx0.08xx15)/(1000xx158)=1.2xx10^(-3)`
No. of moles of `O_(3)=(1)/(2)` mole of hypo
`=(1)/(2)xx1.2xx10^(-3)`
`=6xx10^(-4)` mole
Volume of `O_(3)` at NTP =No. of moles`xx 22400`
`=6xx10^(-4)xx22400`
=13.44 mL at NTP
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • VOLUMETRIC ANALYSIS

    OP TANDON|Exercise Example 25|2 Videos

  • VOLUMETRIC ANALYSIS

    OP TANDON|Exercise Example 27|2 Videos

  • VOLUMETRIC ANALYSIS

    OP TANDON|Exercise Example 7|3 Videos

  • THE COLLOIDAL STATE

    OP TANDON|Exercise Self Assessment|21 Videos

Similar Questions

Explore conceptually related problems

50 mL of an aqueous solution of H_(2)O_(2) was treated with an excess of KI solution and dilute H_(2)SO_(4) . The liberated iodine required 20 mL 0.1 N Na_(2)S_(2)O_(3) solution for complete interaction. Calculate the concentration of H_(2)O_(2) in g//L .

When 100 mL of an aqueous of H_(2)O_(2) is titrated with an excess of KI solution in dilute H_(2)O_(2) , the liberated I_(2) required 50 mL of 0.1 M Na_(2) S_(2)O_(3) solution for complete reaction. Calculate the percentage strength and volume strength of H_(2)O_(2) solution.

Knowledge Check

  • Weight of iodine required to oxidise 500 mL N Na_(2)S_(2)O_(3) solution, is :

    A
    6.35 g
    B
    63.5 g
    C
    127 g
    D
    254 g

  • A 0.1g sample of pyrolusite ore containing MnO_(2)(MW = 87) was dissolved in a concentrated HCI solutiona and liberated CI_(2)(g) was passed through a concentrated KI solution releasing I_(2) if the liberated iodine required 16 ml of 1.25M sodium thiosulphate (Na_(2)S_(2)O_(3)) solution, mass percentage of MnO_(2) in the given sample is

    A
    `43.5%`
    B
    `87%`
    C
    `21.75%`
    D
    `0.875%`

    • Similar Questions

    Explore conceptually related problems

    In an experiment, 10 litre of air at 1 atmospheric pressure and 27^(@) C were passed through an alkaline Kl Solution : At the end , the iodine entrapped in a solution reacted with 1.5 ml of 0.01 N Na_(2)S_(2)O_(3) Solution: Calculate the % volume of O_(3) in the sample .

    A 0.276 g impure sample of copper ore is dissolved and Cu^(2+) is titrated with KI solution. I_(2) liberated required 40 mL of 0.1 M Na_(2) S_(2) O_(3) solution for titration. What is the % of impurities in the ore ?

    A 1.10 g sample of copper ore is dissolved and the Cu^(2+) of is treated with excess KI . The liberated I_(2) requires 12.12 mL of 0.10M Na_(2)S_(2)O_(3) solution for titration. Find the % copper by mass in ore.

    For estimating ozone in the air, a certain volume of air is passed through an . Alkaline Kl solution when O_(2) is evolved and iodide is oxidized to iodine . When such a solution is acidified , free iodine is evolved which can be titrated with standard Na_(2)S_(2)O_(3) . Solution : in an experiment, 10 L ari at 1 atm and 27^(@) C were passed through an alkaline Kl solution , and at the end, the iodine was entrapped in a solution which on titration as above required 1.5 ml of 0.01 N Na_(2)S_(2)O_(3) solution. Calculate volume percentage of ozone in the sample.

    For estimating ozone in the air, a ceratin volume of air is passed through an acidified or neutral KI solution when oxygen is evolved and iodide is oxidised to give iodine. When such a solution is acidified, free iodine is evolved which can be be titrated with standard Na_(2)S_(2)O_(3) solution. In an experiment 10 litre of air at1 atm and 27^(@)C were passed through an alkaline KI solution, at the end, the iodine entrapped in a solution on titration as above required 1.5mL of 0.01N Na_(2) S_(2) O_(3) solution. Calculate volume % fo O_(3) in sample.

    To a 25 mL H_(2)O_(2) solution, excess of acidified solution of potassium iodide was added. The iodine liberated required 20 mL of 0.3 N solution thiosulphate solution. Calculate the volume strength of H_(2)O_(2) solution.

    Home
    Profile