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Chem > Solutions > Flashcards

Solutions Flashcards

1
Q

Solution

A

Homogenous mixture

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2
Q

Solute

A

Substance being dissolved

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3
Q

Solvent

A

Present in greater amount, in what solute is being dissolved

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4
Q

Molarity

A

A way to describe concentration of a solution used in the lab
Number of moles dissolved in each liter of solution

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5
Q

Molarity formula

A

Moles/ liters
M= n/L
M=n/v
N=MV

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6
Q

Diluting formula

A

MV=MV

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7
Q

Solvation

A

The process of dissolving

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8
Q

What are needs for dissolving/ solvating

A

Needs to be enough solvent and enough energy

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9
Q

When solute particles are surrounded by solvent particles…

A

Needs to be enough solvent

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10
Q

When solute particles are separated and pulled into solution…

A

Need to be enough energy

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11
Q

How does dissolving happen with characteristic of solute and solvent (polarity)

A

Like dissolved like

Except ionic dissolved in polar

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12
Q

Seeding

A

Putting crystal in

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13
Q

Unsaturated

A

More solute dissolves

Crystal will dissolve

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14
Q

Saturated

A

No more solute dissolves

Crystal falls to the bottom

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15
Q

Super saturated

A

Becomes unstable
Crystal forms
Crystal will fall with more than it had put in

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16
Q

What is the relationship with concentration from unsaturated to saturated

A

Increases

17
Q

Stronger solvent when add

A

Heat energy

18
Q

Solubility

A

Maximum grams of solute that will dissolve in 100g of solvent at given temp

19
Q

Solubility curve

A

Shows the dependence of solubility on temperature

20
Q

Solubility curves
Below
On line

A

Below- unsaturated

On line- saturated

21
Q

On solubility curve Over line is

A

Supersaturated if

Put it in saturated with some on bottom, if heated up and dissolve and cooled down then supersaturated

22
Q

Gases solubility

A 
Low temps 
High pressure (Henry law) a
23
Q

Solids solubility

A

Solids are more solvable at high temps

24
Q

Colligative property

A

Property that depends on the concentration of the solute particles, not their identity

25
Q

Freezing point

A

Freezing point of a SOLUTION

is lower than freezing point of a PURE SOLVENT

26
Q

Boiling point

A

Boiling point of a SOLUTION is higher than the boiling point of the PURE SOLVENT

27
Q

Vapor pressure

A

vapor pressure of a SOLUTION is lower than the vapor pressure of PURE SOLVENT

28
Q

Osmotic pressure

A

Osmotic pressure of a SOLVENT is higher than the osmotic pressure of a PURE SOLVENT

29
Q

What happens when impurities are introduced to a solution

A

They disturb the stability intermolecular bonds between solvent molecules

30
Q

Osmosis

A

The movement of water across a semi permeable membrane at first the concentration of the solute is very high on the left but overtime the water moves across the semipermeable membrane and dilutes the particles

Chem (14 decks)

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