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.
A) 57.0 kJ
B) 22.8 kJ
C) 73.6 kJ
D) 30.4 kJ
E) 11.9 kJ

Question

Quizplus · Accepted Answer

To calculate the heat required, use the formula q = mcΔT. Here, m = 88.0 g, c = 2.42 J/g°C, and ΔT = 405.0 K - 298.0 K = 107.0°C. Convert the result from J to kJ by dividing by 1000. q = 88.0 g * 2.42 J/g°C * 107.0°C = 22,798.56 J = 22.8 kJ.

Calculate the Amount of Heat (In KJ)required to Raise the Temperature