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Chem 112 > 13-2 > Flashcards

13-2 Flashcards

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1
Q

Liquids that mix in all proportions are

A

miscible

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2
Q

Liquids that do not mix in one another are

A

immiscible

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2
Q

Factors that affect Solubility

A

Solute–solvent interactions
Pressure (for gaseous solutes)
Temperature

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3
Q

simple principle of dissolution:

A

“Like dissolves Like.”

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4
Q

”, the stronger the solute–solvent interaction…

A

, the greater the solubility of a solute in that solvent

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5
Q

Nonpolar organic molecules

A

do not dissolve in water

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6
Q

Polar molecules

A

do dissolve in water very well

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7
Q

Fat-soluble vitamins (like vitamin A) are

A

nonpolar; they are readily stored in fatty (non polar) tissue in the body

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8
Q

Water-soluble vitamins (like vitamin C)…

A

can not be stored in fatty tissue, need to be included in the daily diet.

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9
Q

The solubility of solids and liquids are not affected by pressure, only…

A

gases are affected by the partial pressure

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10
Q

As partial pressure in gases decreases

A

its solubility decreases

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11
Q

As partial pressure of a gas increases

A

its solubility increases.

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12
Q

For most (but not all) solids, as temperature increases..

A

the solubility increases.

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13
Q

For all gases, as temperature increases…

A

the solubility decreases

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14
Q

Mass fraction equation

A

Mass of solute/ mass of solution

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15
Q

Molarity equation

A

moles of solute / volume of solution (L)

16
Q

Molality equation

A

moles of solute / kg of solvent

17
Q

When water is the solvent, dilute solutions have

A

have similar molarity and molality.​

18
Q

Does molality vary with temperature?

A

No, b/c mass does not change with temperature​

19
Q

Does Molarity vary with temperature​?

A

Yes, b/c volume changes with temperature​

20
Q

mass is ____ but volume ___

A

additive
is not additive
msolute + msolvent = msolution​
Vsolute + Vsolvent ≠ Vsolution ​

21
Q

Solubility increases as molar mass increase b/c…

A

dispersion forces between gas molecules and water molecules increase as MW increases ​

22
Q

the stronger the solute-solvent interaction, the…

A

the greater the solubility of a solute in that solvent

Chem 112 (11 decks)

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