Substance A has a higher heat capacity than does substance B, and substance B has a higher heat capacity than does substance C. If you add the same amount of heat to all three, which order shows the proper temperature increase for the three substances?
A.
Temperature of C will increase first, then B, then A.
B.
Temperature of A will increase first, then B, then C.
C.
Temperature of B will increase first, then C, then A.

Question

04-04-2019
Physics

contestada

Substance A has a higher heat capacity than does substance B, and substance B has a higher heat capacity than does substance C. If you add the same amount of heat to all three, which order shows the proper temperature increase for the three substances?
A.
Temperature of C will increase first, then B, then A.
B.
Temperature of A will increase first, then B, then C.
C.
Temperature of B will increase first, then C, then A.

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Answer:

A. Temperature of C will increase first, then B, then A.

Explanation:

Heat capacity is the amount of heat required to raise the temperature of one mole of an object by one degree Celsius.

A higher value of heat capacity indicates that higher amount of heat will be required to change the temperature of that substance.

So in the given statement the order of heat capacity is:

A > B > C

So, it will be harder to change the temperature of A(larger amount of heat will be required) as compared to B and C. And between B and C it will be hard to change the temperature of B.

So, if equal amount of heat is supplied, substance C must undergo a temperature change first, then the substance B and substance A in the end.

Therefore, the correct option is:

A. Temperature of C will increase first, then B, then A.