<u>Answer:</u> The heat capacity of calorimeter is 
<u>Explanation:</u>
To calculate the number of moles, we use the equation:

Given mass of ethanol = 21.8 g
Molar mass of ethanol = 46.07 g/mol
Putting values in above equation, we get:

To calculate the enthalpy change of the reaction, we use the equation:

where,
= amount of heat released = ?
n = number of moles = 0.473 moles
= enthalpy change of the reaction = -1235 kJ/mol =
(Conversion factor: 1 kJ = 1000 J)
Putting values in above equation, we get:

To calculate the heat capacity of calorimeter, we use the equation:

where,
q = heat absorbed by the calorimeter = 
c = heat capacity = ?
= change in temperature = 
Putting values in above equation, we get:

Hence, the heat capacity of calorimeter is 