Question

A student forgot to add the reaction mixture to the round bottomed flask at 27 degree celsius but put it on the flame. After a lapse of time ,he realised his mistake using a pyrometer he found the temperature of flask was 477 degree celsius What fraction of air would have been expelled out

Answer 1

Answer:

The initial temperature T=27oC

=27+273K

=300K

The final temperature T′=477oC

=477+273K

=750K

The inital volume is V L and the final volume is V' L.

V T

V' = T'

V

V' =750300

V

V' =5′2

The fraction of air expelled is 1−V

V'

= 1−2

5

=3.

5