Sea water contains 29.25% NaCl and 19% by weight of solution. The normal boiling point of the sea water is °C (Nearest integer). Assume 100% ionization for both NaCl and . Given: ; Molar mass of NaC

Question

Sea water contains 29.25% NaCl and 19%  by weight of solution. The normal boiling point of the sea water is  °C (Nearest integer). Assume 100% ionization for both NaCl and . Given: ; Molar mass of NaCl and  is 58.5 and 95 g mol⁻¹ respectively.

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Strategy:
 For a mixture of electrolytes, the total elevation in boiling point () is proportional to the total effective molality of all particles. Sum the effective molal intensities () of  and .

Step 1: Determine the composition
Basis: 100 g of sea water.
- Mass of 
- Mass of 
- Mass of water

Step 2: Calculate moles of each solute
- 
-

Step 3: Calculate effective moles ()
Assuming 100% dissociation:
-  ions 
-  ions 
- Total effective moles

Step 4: Calculate Boiling Point Elevation ()
M

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