Answer to Question #202525 in General Chemistry for luke

Question #202525

What molal solution is made when adding 90 grams of K2SO4 to 0.55 kg of water?



1
Expert's answer
2021-06-03T05:29:01-0400

Morality is defined as number of moles of solute dissolved in per kg of solvent. 

It is denoted by m.

m =


Moles of solute = weight of K2SO4 molar mass of K2SO4

Molar mass of K2SO4= 2×39 + 1×32 +4×16 =174g/mol

Moles of K2SO4=


Now 

Molality =


The solution is 0.96 molar. 

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