Home
Class 12
CHEMISTRY
0.05 g of a sample of KClO3 containing s...

0.05 g of a sample of `KClO_3` containing some KCl on decomposition liberated just sufficient oxygen for complete oxidation of 20 " mL of " CO. The volume of CO was measured at `27^@C` and 750 mm Hg. Calculate the perentage purity of `KClO_3`.

Text Solution

Verified by Experts

`underset("20 ml")(CO)+underset("10 ml")((1)/(2)O_(2))rarr 2CO_(2)" Mass of oxygen "=(PV)/(RT)xx32=(0.9868xx0.01)/(0.0821xx300)xx32`
`"Now, "2KClO_(3)rarr 2KCl +3O_(2)" "=0.0128g`
`"Amount of "KClO_(3)" reacted "=(245)/(96)xx0.0128" So, % of "KClO_(3)" in the sample"`
`=0.0326g" "=(0.0326)/(0.05)xx100=65.33%`
Promotional Banner

Topper's Solved these Questions

  • SOME BASIC CONCEPTS OF CHEMISTRY

    VMC MODULES ENGLISH|Exercise SOLVED EXAMPLES|19 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    VMC MODULES ENGLISH|Exercise Illustration the concept:|1 Videos

  • SOME BASIC CONCEPT OF CHEMISTRY

    VMC MODULES ENGLISH|Exercise IMPECCABLE|49 Videos

  • STATES OF MATTER

    VMC MODULES ENGLISH|Exercise IMPECCABLE|50 Videos

Similar Questions

Explore conceptually related problems

36 ml of a gaseous mixture consisting of a gaseous organic compound A and just sufficient amount of oxygen required for complete combustion gives 16 ml of CO_(2) , 24 ml water vapour and 8 ml of N_(2) . The volumes are measured at same temperature and pressure. Volume of O_(2) required for complete combustion

36 ml of a gaseous mixture consisting of a gaseous organic compound A and just sufficient amount of oxygen required for complete combustion gives 16 ml of CO_(2) , 24 ml water vapour and 8 ml of N_(2) . The volumes are measured at same temperature and pressure. The molecular formula of compound will be.

95 " mL of " a mixture of a gaseous organic compound A and just sufficient amount of oxygen required for the complete yields on burning 40 " mL of " CO_2 and 70 " mL of " water vapour along with 10 " mL of " nitrogen,volumes measured at the same temperature and pressure. Compound A contains corbon, hydrogen, and nitrogen only as the constituent elements. Calculate. (a). The volume of O_2 required for complete combustion (b). The molecular formula of A.

A 0.5 g sample containing MnO_(2) is treated with HCl liberating Cl_(2) is passed into a solution of KI and 30.0 " mL of " 0.1 M Na_(2)S_(2)O_(3) are required to titrate the liberated iodine. Calculate the percentage of MnO_(2) is the sample.

Nine volumes of gaseous mixture consisting of gaseous organic compound A and just sufficient amount of oxygen required for complete combustion yielded on burning 4 volumes of CO_(2) , 6 volumes of water vapours, and 2 volumes of N_(2) , at all volumes measured at the same temperature and pressure. If the compounds contains C, H , and N only, the molecular formula of compound A is

A 2.0 g sample of a mixture containing sodium carbonate, sodium bicarbonate and sodium sulphate is gently heated till the evolution of CO_(2) ceases. The volume of CO_(2) at 750mm Hg pressure and at 298 K is measured to be 123.9 mL . A 1.5 g of the same sample requires 150 mL of (M//10) HCl for complete neutralization. Calculate the percentage composition of the components of the mixture.

A 2.0 g sample of a mixture containing sodium carbonate, sodium bicarbonate and sodium sulphate is gently heated till the evolution of CO_(2) ceases. The volume of CO_(2) at 750mm Hg pressure and at 298 K is measured to be 123.9 mL . A 1.5 g of the same sample requires 150 mL of (M//10) HCl for complete neutralisation. Calculate the percentage composition of the components of the mixture.

Osomotic pressure of a solution containing 2 g dissolved protein per 300 cm^3 of solution is 20 mm of Hg at 27^@C . The molecular mass of protein is

200ml of a gaseous mixture containing CO,CO_(2) and N_(2) on complete combusion in just sufficient amount of O_(2) showed contration of 40ml . When the resulting gases were passed through KOH solution it reduces by 50% then calculate the volume ratio of V_(co_(2)): V_(CO): V_(N_(2)) in original mixture .

A sample of magnisium metal containing some MgO as impurity was dissolved in 125 " mL of " 0.1 N H_2SO_4 . The volume of H_2 evolved at 27.3^@C and 1 atm was 120.1 mL. Resulting solution was found to be 0.02 N with respect to H_2SO_4 . Calculate (i) the weight of sample dissolved and (ii) the percentage by weight of Mg in the sample. Neglect any change in the volume of the solution (atomic weight of Mg=24.3 ).