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Che144 > Water Week 1 > Flashcards

Water Week 1 Flashcards

1
Q

What is a solution?

A

The dispersion of a substance uniformly through another substance.

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2
Q

What is a solvation

A

The interaction between ion-dipole attractions between solute and solvent

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3
Q

What is a saturated solution

A

A solution that is in equilibrium with a undissolved solute

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4
Q

What is a unsaturated solution.

A

Less solute than needed to make a saturated solution

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5
Q

How to you work out the mass percentage of a solution

A

Mass of component in solution/Total mass of solution X100

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6
Q

How do you work out the parts per million (PPm) of a solution

A

Mass of component in solution/total mass of solution X 10^6

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7
Q

How do you work out the molarity (m) of a solute

A

Moles of solute/Amount of solution

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8
Q

How do you work out the molarity of the solution

A

Moles of solute/Kg of solvent

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9
Q

What are colligative properties

A

Lowering/raising the freezing and boiling point are physical properties of that solution that depends on the quantity of solute, but not the “kind” or “identity” of the solute particles

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10
Q

What are strong electrolytes

A

Solutes that exist in a solution almost completely as ions

Essentially all soluble ionic compounds

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11
Q

What are week electrolytes

A

Solutes that exist in a solution mostly as molecules with a small amount of ions

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12
Q

What is chemical equilibrium

A

The balance between opposing processes determines the relative numbers of ions and neutral molecules

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13
Q

What are precipitation reactions

A

Reactions that result in the formation of an insoluble product

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14
Q

What are exchange (metathesis) reactions

A

Reactions in which positive ions and negative ions appear to exchange partners

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15
Q

What is shown in a molecule equation

A

The complete chemical formula of the reactants and products, without indicating there ionic character

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16
Q

What is shown in a complete ionic equation

A

All soluble strong electrolytes shown as ions

17
Q

What are spectator ions

A

Ions that appear in identical forms among both reactants and products

18
Q

What is shown in a net ionic equation

A

All spectator ions are omitted from the equation leaving a net ionic equation

19
Q

What is Raoult’s law

A

The partial pressure exerted by solvent vapour above a solution (Psolution), equals the product of the mole fraction of the solvent, Times the vapour pressure of the pure solvent (Psolvent)
(Psolution = Xsolvent Psolvent)
Ideal solution follow this rule

Che144 (2 decks)

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