Answer :
Taking into account the definition of calorimetry, the heat change that would take place as 25.7 g of liquid Ethyl alcohol are cooled from 55.2 °C to 30 °C is -1554.336 J.
Calorimetry
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).
So, the equation that allows to calculate heat exchanges is:
Q = c× m× ΔT
where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.
Heat change
In this case, you know:
- Mass= 25.7 g
- Initial temperature= 55.2 °C
- Final temperature= 30 ºC
- Specific heat= 2.40 [tex]\frac{J}{gC}[/tex]
Replacing in the expression to calculate heat exchanges:
Q= 2.40 [tex]\frac{J}{gC}[/tex]× 25.7 g× (30 °C - 55.2 °C)
Solving:
Q= -1554.336 J
Finally, the heat change that would take place as 25.7 g of liquid Ethyl alcohol are cooled from 55.2 °C to 30 °C is -1554.336 J.
Learn more about calorimetry:
brainly.com/question/11586486
brainly.com/question/24724338
brainly.com/question/14057615
brainly.com/question/24988785
brainly.com/question/21315372
brainly.com/question/13959344
brainly.com/question/14309811
brainly.com/question/23578297?