A certain reaction is at equilibrium at 820C and the enthalpy change for this reaction is 21.3kJ. calculate the value of entropy change for the reaction.
Q. A certain reaction is at equilibrium at 820C and the
enthalpy change for this reaction is 21.3kJ. calculate the
value of entropy change for the reaction.
Ans.
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Q. An ultrasonic wave of frequency 45000Hz
sent out by sonar shows a frequency rise of 600 Hz on reflection from an approaching submarine. If the velocity of sound in water is 1500m/s.Calculate the speed of the submarine.
Answer.
Let the frquency of ultrasonic waves is 4500 Hz=f1
Given,a frequency rise of 600Hz on reflection from an approaching submarine.
f2=600Hz
the velocity of sound in water is 1500m/s
Because
velocity=wavelength*frequency
v1=wavelength1*frequency1
wavelength1 =1500/45000
=1/30m
Similarily,
velocity2=wavelength2*frequency2
=1/30*600
=20m/s
A certain reaction is at equilibrium at 820C and the enthalpy change for this reaction is 21.3kJ. calculate the value of entropy change for the reaction.
Reviewed by Shubham Prajapati
on
March 04, 2021
Rating:
Reviewed by Shubham Prajapati
on
March 04, 2021
Rating:
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