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14. 5 kg of liquid seawater with initial temperature 0°C and salinity 3 percent (by mass) is mixed with pure water with initial temperature 15°C. The system reaches equilibrium at +5°C. Determine the initial mass of the pure water and the final salini- ty of the mixture.

14. 5 kg of liquid seawater with initial temperature 0°C and salinity 3 percent (by mass) is mixed with pure water with initial temperature 15°C. The system reaches equilibrium at +5°C. Determine the initial mass of the pure water and the final salini- ty of the mixture.

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Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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14. 5 kg of liquid seawater with initial temperature 0°C and salinity 3 percent (by mass) is mixed with pure water with initial temperature 15°C. The system reaches equilibrium at +5°C. Determine the initial mass of the pure water and the final salini- ty of the mixture.
Transcribed Image Text:14. 5 kg of liquid seawater with initial temperature 0°C and salinity 3 percent (by mass) is mixed with pure water with initial temperature 15°C. The system reaches equilibrium at +5°C. Determine the initial mass of the pure water and the final salini- ty of the mixture.
Expert Solution
Step 1

Given :

Initial mass of solution = 5 Kg = 5000 g                                                  (Since 1 Kg = 1000 g)

Salinity by mass = 3 %

Initial temperature of solution (T2)= 0.0 oC = 273 K

The initial temperature of water added (T1)= 15 oC =288 K

And the final equilibrium temperature of the solution (T)= 5 oC=278 K

To determine: Initial mass of pure water and the final salinity of the mixture

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