30 Questions
What is the fundamental principle behind the first law of thermodynamics?
The law of conservation of energy
What is the mathematical expression of the first law of thermodynamics?
ΔU = Q - W
Which of the following thermodynamic processes involves a constant volume?
Isochoric process
What is the characteristic of an adiabatic process?
Zero heat transfer
What is the parameter that is kept constant in an isobaric process?
Pressure
What is the primary way a thermodynamic system interacts with its surroundings?
Through work and heat
What is the primary characteristic of an isobaric process?
The pressure remains constant
What is the effect of heat transfer to a system in an isobaric process?
Both work is done and internal energy changes
What is the mathematical representation of the work done in an isobaric process?
W = P ΔV
What is the sign of the work done in an isobaric process when the system expands?
Positive
What is an application of isobaric processes in everyday life?
Refrigeration and air conditioning
What happens to the temperature of the refrigerant gases during compression in refrigeration and air conditioning systems?
It increases
What is the characteristic of an isobaric process?
The pressure is constant
A gas undergoes an isobaric process from 5 L to 10 L at a constant pressure of 2 atm. What is the work done by the gas?
10 atm*L
What is the unit of work done in the problem solving example?
Joules
A gas is compressed to half its initial volume of 200 L at a constant pressure of 0.5 atm. What is the sign of the work done?
Negative
What does the term 'isochoric' mean?
Constant volume
What is the condition for the boiling of water in an open vessel?
At atmospheric pressure
What is the primary characteristic of an isochoric process?
The volume of the system remains constant
What is the relationship between the pressure and temperature of an ideal gas in an isochoric process?
The pressure is directly proportional to the temperature
What is the mathematical equation that represents the isochoric process?
∆U = Q
What is the shape of the P-V diagram for an isochoric process?
A vertical line
What is the change in internal energy of the system in an isochoric process?
ΔU = Q
What is the ideal gas law equation?
PV = nRT
What is the formula to calculate the change in internal energy of a gas?
ΔU = mCv T
What is the application of isochoric process in everyday life?
Heating a material in a bomb calorimeter and heating of water in a tightly sealed flask
What is the unit of the amount of substance of gas?
Moles
What is the formula to calculate the heat energy absorbed or released?
ΔQ = mCv T
What is the change in internal energy of a gas proportional to?
All of the above
What is the specific heat at constant volume a measure of?
The amount of heat energy required to change the temperature of a gas
This quiz covers thermodynamic processes, including isobaric and isochoric processes, with examples and problem-solving exercises involving the first law of thermodynamics.
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