Question

If the specific heat capacity of iron is 0.108 cal/gC. Then how much heat is sufficient to raise the temperature of 1g of iron through 1C.
A.0.108 calories
B.108 calories
C.0.0108 calories
D.10.8 calories.

Answer 1

Hint- Make use of the definition of specific heat.Specific heat is the amount required to raise the temperature of unit mass of a substance.

Complete step by step solution:
Before solving the question, we need to understand the meaning of specific heat capacity.
The specific heat capacity of a substance is the heat capacity of a sample of the substance divided by the mass of the substance. It is, therefore, the amount of energy that must be added, in the form of heat to one-unit mass of the substance in order to cause an increase of one unit of temperature.
In other words, the specific heat capacity of a material is the energy required to raise one kilogram (kg) of the material by one degree Celsius (). Like for example the specific heat capacity of water is 4,200 joules per kilogram per degree Celsius,
Now that we know the meaning of specific heat capacity let us solve the sum,
Specific is the amount of heat required to raise the temperature of unit mass of substance through 1 degree.
Now it is given that the specific heat capacity of iron is 0.108 cal/gC, it means that 0.108 cal. Therefore, only 0.108cal of heat is sufficient to raise the temperature of 1 g of iron through 1C.

Therefore, the answer is option (a)

Note: Before solving the sum, we need to understand the meaning of the term specific heat capacity. We also need to give the answer in calories, so we need to understand the meaning of the units calories.