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an open vessel at 37 is heated until ¾ of air is has been expelled .assuming volume of the vessel remains constant,the temperature to which vessel remain in the flask

an open vessel at 37 is heated until ¾ of air is has been expelled .assuming volume of the vessel remains constant,the temperature to which vessel remain in the flask

Grade:11

1 Answers

Arun
25750 Points
5 years ago

Let the number of moles of air pesent in the vessel = n

75% means ¾ th of the original moles of gas has been expelled.

Therefore, the remaining number of moles of air in the vessel = (n – ¾ n)

   =  ¼ n

At constant pressure and volume,

n1T1= n2T2

n x 310 = ¼ n x T2

T2 = 1240 K = 967 degree Celcius

 

Hence, the temperature to which the vessel has been heated is 967 degree Celcius.

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