Concept explainers
A quantity of
Interpretation:
The heat capacity of a calorimeter, when the given amount of
Concept introduction:
Heat absorbed or released in the reaction is given by:
Here,
Specific heat is the heat required to increase the temperature of
Heat absorbed or released in the reaction is also given by:
Here,
Heat capacity is defined as the heat required to increase the temperature of a body by1°C.
Its S.I. unit is
Concentration (molarity) of a solution is given by:
Here,
Answer to Problem 104AP
Solution: The heat capacity of a calorimeter is
Explanation of Solution
Given information:
Molar heat of neutralisation is
Specific heat of the solution = Specific heat of water
Concentration (molarity) of a solution is given by:
It can be rewritten as
Equation for the ionization of
So, it is clear that
The number of moles of
Substitute
Equation for the ionization of
So, it is clear that
The number of moles of
Substitute
Now, the heat produced by the reaction is calculated by:
Substitute
It is known that
Therefore,
However, the heat of the surroundings includes the heat of water and the heat of the calorimeter.
So,
Change in temperature is
Mass of
Substitute
Substitute
So, the heat capacity of the calorimeter is given as
The heat capacity of the calorimeter is calculated to be
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