Question

If the temperature of 34.4 g of ethanol increases from 25 °C to 78.8 °C, how much heat has been absorbed by the ethanol? The specific heat of ethanol is 2.44 J/(gC)?

Answer 1

Answer:

The heat absorbed by the ethanol is 4.5151 kJ.

Explanation:

Mass of ethanol = 34.4 g

The specific heat of ethanol ,c = 2.44 J/(g°C)

Change in temperature of the ethanol$\Delta T$ = 78.8 °C-25 °C=53.8°C

Heat absorbed by the ethanol = Q

$Q=mc\Delta T=34.4 g\times 2.44 J/g^oC\times 53.8^oC=4,515.756J=4.515 kJ$

The heat absorbed by the ethanol is 4.5151 kJ.