Why is it necessary to measure the water equivalent of the calorimeter in this experiment how is this value used?

Measurement of W (i.e, water equivalent of the calorimeter) is necessary because during the heat exchange, the calorimeter also takes some amount of heat evolved (due to the reaction) and hence should be taken into account. The temperature of this water was noted at every one minute for five minutes.

What does the water equivalent of a calorimeter represent?

The water equivalent of a calorimeter is defined as the mass of water that will absorb or lose as same quantity of heat as the substance for the same change in temperature.

Why is calorimeter used in the experiment?

A calorimeter is a device used to measure the amount of heat involved in a chemical or physical process. For example, when an exothermic reaction occurs in solution in a calorimeter, the heat produced by the reaction is absorbed by the solution, which increases its temperature.

What is the water equivalent of bomb calorimeter?

Water equivalent of the calorimeter using combustion fuels (kerosene) gives 384.165g. Water equivalent of the calorimeter using combustion fuels (diesel) gives 221.27g.

What is the significance of water equivalent?

A substance’s water equivalent is equivalent to the amount of water that is required to consume the same quantity of heat as that substance does for a temperature rise of one degree.

Why is water used as the liquid inside the calorimeter?

Water has a high specific heat, which means it is difficult to increase the temperature of water. However, water also has the capacity to retain heat, which allows the other substance inside the calorimeter to absorb that heat.

What is the use of water equivalent?

Answer: A substance’s water equivalent is equivalent to the amount of water that is required to consume the same quantity of heat as that substance does for a temperature rise of one degree.

What are the units of water equivalent in the calorimetry experiment?

The SI unit for water equivalence is $Kg$ and its dimensional formula is ${M^1}{L^0}{T^0}$. The thermal capacity of the body and its water equivalent are numerically equal. If the thermal capacity of the body is expressed in terms of the mass of water then it is called Water equivalence of the body.

Why is water used in a calorimeter?

Why do you stir the water in a calorimeter?

Explanation: Well, so as to prevent hot-spots, and burning on the bottom of the pan. When you do a calorimetric experiment, you have a given mass of water, and you want the temperature rise of this mass to be uniform. So you stir it.

How do you use water equivalent?

Equivalent Water = Mass x Specific Heat It is also possible to describe the water equivalent of a given body as the mass of water whose heat capacity equals the heat capacity of a given body.

What is meant by water equivalent?

: the product of the mass of a body by its specific heat equal numerically to the mass of water that is equivalent in thermal capacity to the body in question.

What is the purpose of finding water equivalent of calorimeter?

Water is used because it is a universal and fundamental substance to the field of chemistry as we know it on planet Earth. Water is so fundamental that the unit of heat in calorimetry, the calorie, is defined as the amount of energy required to raise the temperature of 1 gram of water by 1 degree Celsius.

How does a constant pressure calorimeter measure heat?

A constant- pressure calorimeter measures the heat effects of variety of reactions such as neutralisation reactions, heat of solution and heat of dilutions.

When to select hot water or cold water in calorimetry?

It is important to note that, the one should first select the sample “Cold water” to proceed with the simulation. Whenever the reading on the stop watch becomes 4 minute 30 sec, the one can then select the next sample “Hot water”.

Where does the word calorimetry come from in science?

Calorimetry is derived from the Latin term “calor” which means heat, and the Greek term “metry” means to measure, the heat in the system. The recent advance in the calorimetry and electronics helps the user to maintain the samples under proper conditions that can be easily analysed.