1.

60mL of pure ozone is heated and then colled. The increase in the volume is 10mL. Determine the percentage volume of ozone decomposed into oxygen.

Answer»

Solution :The balanced equations for the decomposed of ozone is
`2O_(3)(g)to3O_(2)(g)`
`2 vol "" 3vol"Gay-Lussac.s COEFFICIENTS"`
`60mL "" "0mL at start"`
`60-2x "" 3x "after the REACTION"`
Total volume of the mixture after the reaction =60-2x+3x=60+10
SOLVING, x=10
Volume of `O_(3)` decomposed =20mL
Percentage volume of `O_(3)` decomposed `=(20/(60)xx100=33.3%)`


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