
Which one of the following statements is false?
a) Work is a state function.
b) Temperature is a state function.
c) Change in the state is completely defined when the initial and final states are specified.
d) Work appears at the boundary of the system.
Answer
522k+ views
1 likes
Hint: A state function is a property whose value does not depend on the path taken to reach that specific value. On the other hand, path function is a property whose values depend on the path of transition of a system from the initial state to the final state.
Complete step by step answer:
1. Work appears only as change in the state at the boundary of the system. It does depend on the path taken in going from state one to state two. So, work done is a path function. Hence, the statement is false.
2. Temperature measures a property of a state of a system irrespective of how it got there. That means temperature is a state function. Temperature is a state function that means No matter how many times we heat, cool, expand, compress, or otherwise change the system, the net change in the temperature only depends on the initial and final states of the system. So, the second statement is true.
3. When all the parameters like Pressure(V), Volume(V) and Temperature(T) are given for both the initial and the final states we can easily define the change in the state, that means the third statement is also true.
4. We have already discussed in the first statement that Work appears only as change in the state at the boundary of the system. It is a path function and It can be defined as any quantity of energy that flows across the boundary between the system and surroundings. So, the fourth option is also true.
Therefore, from the above statements we can conclude that the only option false here is (a).
Note: The other state functions are:
a) Enthalpy: It is defined in terms of state functions for example U, P, and V are all state functions. Their values depend only on the state of the system and not on the paths taken to reach their values.
b) Entropy: We cannot measure entropy; we always measure the change of entropy. Entropy is disorderness, which is also path independent and depends on its initial and final points. So, entropy is a state function.
Complete step by step answer:
1. Work appears only as change in the state at the boundary of the system. It does depend on the path taken in going from state one to state two. So, work done is a path function. Hence, the statement is false.
2. Temperature measures a property of a state of a system irrespective of how it got there. That means temperature is a state function. Temperature is a state function that means No matter how many times we heat, cool, expand, compress, or otherwise change the system, the net change in the temperature only depends on the initial and final states of the system. So, the second statement is true.
3. When all the parameters like Pressure(V), Volume(V) and Temperature(T) are given for both the initial and the final states we can easily define the change in the state, that means the third statement is also true.
4. We have already discussed in the first statement that Work appears only as change in the state at the boundary of the system. It is a path function and It can be defined as any quantity of energy that flows across the boundary between the system and surroundings. So, the fourth option is also true.
Therefore, from the above statements we can conclude that the only option false here is (a).
Note: The other state functions are:
a) Enthalpy: It is defined in terms of state functions for example U, P, and V are all state functions. Their values depend only on the state of the system and not on the paths taken to reach their values.
b) Entropy: We cannot measure entropy; we always measure the change of entropy. Entropy is disorderness, which is also path independent and depends on its initial and final points. So, entropy is a state function.
Recently Updated Pages
Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Trending doubts
The flightless birds Rhea Kiwi and Emu respectively class 11 biology CBSE

1 litre is equivalent to A 1000mL B 100cm3 C 10mL D class 11 physics CBSE

A car travels 100 km at a speed of 60 kmh and returns class 11 physics CBSE

Name the Largest and the Smallest Cell in the Human Body ?

Explain zero factorial class 11 maths CBSE

In tea plantations and hedge making gardeners trim class 11 biology CBSE
