Question

What is the approximate value of specific heat capacity of water in S.I unit?

Answer 1

Hint : The specific heat capacity of a substance, also known as massic heat capacity (symbol${c_p}$ ) in thermodynamics, is the heat capacity of a sample divided by the mass of the sample. Informally, it is the quantity of energy that must be added to one unit of mass of a substance in the form of heat to create a one-unit increase in temperature.

Complete step-by-step solution:
The amount of heat required to increase the temperature of one gram of a substance by one degree Celsius (°C) is known as specific heat. Water has a high specific heat, which means it takes more energy to raise the temperature of water than it does to raise the temperature of other substances. This is why water is so important in industries and as a coolant in your car's radiator. The high specific heat of water also helps govern the rate at which air temperature changes, which is why, especially near the oceans, temperature changes between seasons are gradual rather than abrupt.
The approximate value of specific heat capacity of water in S.I unit is $4184\;J \cdot k{g^{ - 1}} \cdot {K^{ - 1}}$

Additional Information:-
1. Sensitive thermometers must also be composed of materials having a low specific heat capacity in order to detect and display temperature changes quickly and accurately.
2. Heat storage devices are extremely valuable and are often built of materials having a high specific heat capacity.
3. Because a large amount of heat will cause only a small change in temperature, substances with a high specific heat capacity are suitable as a material for making kettle handlers, insulators, and oven covers, because a large amount of heat will cause only a small change in temperature, the material won't get too hot.

Note: If the substance suffers irreversible chemical changes or a phase transition, such as melting or boiling, at a sharp temperature within the measurement's range of temperatures, the specific heat capacity is meaningless.