The 3kg of 20% of salt brine at 65 degrees Celsius has more enthalpy than the 5kg of 20% salt brine at 50 Degrees Celsius.
What is enthalpy?
Enthalpy is defined as the total heat content of a system. The enthalpy is a measure of the total work which the system can do plus the internal energy of the system.
The enthalpy of the given solutions can be calculated as follows:
- Enthalpy = mass * specific heat capacity * temperature change.
For the 3kg of 20% of salt brine at 65 degrees;
mass of salt = 3 * 20% = 0.6 kg
specific heat capacity = 3.56kJ/kg*C
temperature change = 65°C
Enthalpy = 0.6 * 3.56 * 65
Enthalpy = 232 kJ
For the 5kg of 20% salt brine at 50 Degrees Celsius;
mass of salt = 5 * 20% = 1 kg
specific heat capacity = 3.56kJ/kg*C
temperature change = 50°C
Enthalpy = 1 * 3.56 * 50
Enthalpy = 178 kJ
Therefore, the 3kg of 20% of salt brine at 65 degrees Celsius has more enthalpy.
In conclusion, the enthalpy or heat content of the solutions depends on the mass and temperature change.
Learn more about enthalpy at: https://brainly.com/question/14047927
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