Help me! Convert the following solubilities of NaCl in g/100mL to molality (mol solute/kg solvent).
Temp 0.0 Solubility 34.0
Temp 25 Sol 35.7
Temp 80 Sol 39.0
Temp 100 Sol 41.0
If you can do one of the Conversions to molality (NOT MOLARITY :) I will be able to do the rest. I'm sure it's gotta be pretty darn simple. Thanks!!
Temp 0.0 Solubility 34.0
Temp 25 Sol 35.7
Temp 80 Sol 39.0
Temp 100 Sol 41.0
If you can do one of the Conversions to molality (NOT MOLARITY :) I will be able to do the rest. I'm sure it's gotta be pretty darn simple. Thanks!!
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Just take the mass solubility (34.0 g/100 mL) and first convert the mass into moles using the molar mass of NaCl:
34.0 g/100 mL / 58.44 g/mol = 0.582 mol/100 mL
Then, convert the volume part to 1000 mL (this is assuming that the solvent is water and that its density is pretty close to 1 g/mL). In several steps:
0.582 mol/100 mL X 1 mL/g X 1000 g/kg = 0.582 X 10 = 5.82 molal
Just repeat this for the others...
34.0 g/100 mL / 58.44 g/mol = 0.582 mol/100 mL
Then, convert the volume part to 1000 mL (this is assuming that the solvent is water and that its density is pretty close to 1 g/mL). In several steps:
0.582 mol/100 mL X 1 mL/g X 1000 g/kg = 0.582 X 10 = 5.82 molal
Just repeat this for the others...