What is the mole fraction of solute and the molal concentration for an aqueous solution that is 19.0% NaOH by mass?
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19.0% NaOH by mass means that there is 19 g of NaOH in 100 mL of water.
use the formulas for molality and mole fraction.
So, what is the Solute and what is the Solvent in this question?
NaOH is the solute water is the solvent
Note: the one that is less is always the solute.
Not the answer you are looking for? Search for more explanations.
So do I need to change the 19g and 100 mL to moles, then plug it into the equation?
for mole fraction, yes. for molality, only convert the solute to moles.
I tried all that and I still cant get the right answer. Any other hints anyone can give me?
can you post what you did?
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