Suppose you dissolve 4.50 g of NaOH in 500. mL of methanol, which has a density of 0.791 g/mL. The solution has a total volume of 505. mL. Find the: moles solute (a) Molarity = Liters of solution moles solute (b) Mole fraction= %3D moles solute plus moles solvent moles solute (c) Molality= kg solvent

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Chapter7: Solutions And Colloids
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Suppose you dissolve 4.50 g of NAOH in 500. mL of methanol, which has a density of 0.791
g/mL. The solution has a total volume of 505. mL.
Find the:
moles solute
(a)
Molarity =
Liters of solution
moles solute
(b)
Mole fraction=
moles solute plus moles solvent
moles solute
(c)
Molality=
kg solvent
(d)
Mass % solute=
mass solute
X 100
mass of solute plus mass of solvent
(e)
ppm = Parts per million=
mass solute
X 1,000,000
mass of solute plus mass of solvent
18
HB #2
Transcribed Image Text:ythos.content.blackboardcdn.com/5af05a7aa8cfe/3542526?X-Blackboard-Expiration=1614816000000&X-E 100% Suppose you dissolve 4.50 g of NAOH in 500. mL of methanol, which has a density of 0.791 g/mL. The solution has a total volume of 505. mL. Find the: moles solute (a) Molarity = Liters of solution moles solute (b) Mole fraction= moles solute plus moles solvent moles solute (c) Molality= kg solvent (d) Mass % solute= mass solute X 100 mass of solute plus mass of solvent (e) ppm = Parts per million= mass solute X 1,000,000 mass of solute plus mass of solvent 18 HB #2
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