600 ml of amixture of O3 and O2 weighs 1g at NTP. Calculate the volume of ozone in the mixture.

molecular mass of oxygen = 32
molecular mass of ozone = 48

let us say volume of O2 = x ml
hence volume of O3 = 600 - x ml (volume of oxygen + ozone=600 mL)
at STP,
wt of x ml O2 = 32*x/22400 gm
wt of 600 - x ml O3 = 48*(600 - x)/22400 gm

EQUATION:
32*x/22400 + 48*(600 - x)/22400 = 1 (wt of x mL oxygen=x moles*atomic weight);
32x + 28800 - 48x = 22400
16x = 28800 - 22400 = 6400
x = 6400/16 = 400 mL

HENCE VOLUME OF O2 IN THE MIXTURE = 400 ml.

  • 45

 weight of O2 = x, weight of O3 = 1 - x

Moles of O2 = x/32, moles of O3 = (1 - x)/48

Volume of O2 = x/32 * 22.4, volume of O3 = (1 - x)/48 * 22.4

This is equal to .6 litres

=> x/32 * 22.4 + (1 - x)/48 * 22.4 = .6
=> x/96 * 22.4 + 22.4/48 = .6
=> x/96 * 22.4 = 6.4/48
=> x = 0.53333333 g

Hence,
weight of oxygen = 0.53333333g
weight of ozone = 0.46666667g

  • -25

 oh sorry my ans was half the volume of 03 will be O3 = 200 mL

  • -5
What are you looking for?