Question

What is the specific heat of a substance?

Answer 1

Answer:

the ratio of the quantity of heat required to raise the temperature of a body one degree to that required to raise the temperature of an equal mass of water one degree. 2 : the heat in calories required to raise the temperature of one gram of a substance one degree Celsius

Answer 2

Specific heat of a substance is the amount of heat to raise the temperature of unit mass of that substance by unit degree centigrade or Kelvin.

• It is represented by c.

• Its unit is J/Kg K orJ/Kg°C.
• It is calculated by the formula:

$c=\frac{ΔQ}{mΔT}$

Where,

ΔQ-amount of heat required

m-mass of the body

ΔT-change in temperature.

• Specific heat capacity of water is 4200 J/Kg K(4.2 J/g K).
• If the specific heat of a body is infinite then it means no change in temperature took place whether heat was given out or taken in.
• Specific heat capacity is a characteristic property of a body. It is different for different material.
• Practically, specific heat capacity increase with the increase in temperature.

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