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Chemistry > Chapter 5 > Flashcards

Chapter 5 Flashcards

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1
Q

Adsorption

A

adhering of a component onto the stationary phase

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2
Q

Aqueous solution

A

solution in which the solvent is water

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3
Q

Chromatogram

A

visual output of chromatography

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4
Q

Desorption

A

release of a component from the stationary phase by dissolving

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5
Q

Dissolved

A

incorporated into a liquid to form a solution

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6
Q

Eluent

A

solvent fluid that moves through a chromatography system

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7
Q

Homogenous

A

a mixture with uniform composition and properties

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8
Q

HPLC

A

chromatography technique in which the mobile phase is pumped through a tightly packed stationary phase under pressure

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9
Q

Hydrated

A

surrounded by water molecules

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10
Q

Ion-dipole attraction

A

electrostatic attraction between permanent dipole and an ion

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11
Q

Ionisation

A

process by which a chemical species gains or loses an electron to gain an electric charge

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12
Q

Mobile phase

A

fluid in a chromatography system that carries the sample over the stationary phase

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13
Q

Origin

A

line at which samples are placed in paper and thin-layer chromatography

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14
Q

Paper chromatography

A

chromatography technique using absorbent paper

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15
Q

Peak area

A

the area enclosed between the peak and the baseline of the chromatograph

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16
Q

Retention time

A

time taken for a component to pass through a HPLC column

17
Q

Solute

A

substance that dissolves in a solvent

18
Q

Solution

A

homogenous mixture in which a substance is dissolved in another

19
Q

Solvent

A

substance that dissolves another substance

20
Q

Solvent front

A

the wet moving edge of the solvent in chromatograph

21
Q

Stationary phase

A

solid onto which the components of a sample adsorb

22
Q

Thin-layer chromatography

A

chromatography technique using a thin stationary phase supported by an inert backing

Chemistry (17 decks)

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