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Calculate the amount of heat (in kj) required to raise the temperature of a 88.0 g sample of ethanol from 298.0 k to 405.0 k. the specific heat capacity of ethanol is 2.42 j/g⋅∘c.

Respuesta :

Given:

Mass of ethanol m = 88 g

Initial temperature T1 = 298 K = (298-273)C = 25 C

Final temperature, T2 = 405 K = (405-273) = 132 C

heat capacity of ethanol, c = 2.42 J/g C

To determine:

The heat required to raise the temperature of ethanol

Explanation:

the heat (Q) required is given as:

Q = mcΔT = mc(T2-T1)

Q = 88.0 g * 2.42 J/gC *(132-25) C = 22786 J

Ans: Heat required = 22.79 kJ