An unknown metal displaces cadmium (Cd) from solution but does not displace chromium (Cr). Using the activity series, determine
2 answers:
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<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