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Grade: 12th pass
        
What is the molality of NaOH in the final solution when equal masses of 2molal NaOH(aq) and 4molal NaOH (aq)are mixed?
2.89m
3.4m
Pls sir expalin with whole process.
one year ago

Answers : (1)

Arun
22987 Points
							
2m solution means 2 moles in 1 kg of solvent 
&
4m solution means 4 moles in 1 kg of solvent.
When these 2 are added, we get 6moles in 2 kg of solvent .
Now molality of the resulting solution
= number of moles / weight of solvent
= 6 moles / 2 kg 
= 3m
Therefore the molality of the resulting solution is 3m.
 
one year ago
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