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
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
Chapter7: Solutions And Colloids
Section: Chapter Questions
Problem 7.107E
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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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fab7e541f-2c38-4c7c-b1fe-e0e3bb344d2c%2F1c9cf9e6-33bf-408d-a91a-1e1ca6546323%2F7j2qg6i_processed.jpeg&w=3840&q=75)
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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