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ARC OBJECTIVES > Anachem > Flashcards

Anachem Flashcards

1
Q

Analysis of a chemical substance

A

Analytical Chemistry

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2
Q

Determine the identity of species in a sample

A

Qualitative analysis

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3
Q

Dtermines the amount of species or analytes in numerical terms

A

Quantitative Analysis

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4
Q

Determination of mass of analyte

A

Gravimetric method

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5
Q

Determination of volume of a soln containing reagent to react w/ analyte

A

Volumetric methods

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6
Q

Amphiprotic, undergoes self-ionization or autoprotolysis

A

Water

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7
Q

Ionizes completely in water

A

Strong acid and base

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8
Q

Henderson-Hasselbalch Equation

A

pH=pKa-log[acid]/[base]

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9
Q

The qty of strong acid or strong base needed to allow 1L of buffer to change a pH to 1

A

Buffer capacity

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10
Q

[OH-]>[H+]

A

Basic

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11
Q

This causes water to have slightly acidic pH at room temperature

A

Carbonic acid

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12
Q

Benzoic acid dissolved in water forms benzoate and hydronium ions. Which is conjugate acid?

A

Hydronium ions

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13
Q

Buffer capacity is max when

A

pH = pKa

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14
Q

Determination of nitrogen based on the conversion of organic N to NH3.

A

Kjeldahl Method

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15
Q

Analyte: Cl,Br, CN
Indicator: Na2CrO4
Brick red precipitate

A

Mohr method

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16
Q

Analyte: Cl, Br, I, SCN
Indicator: dichlorofluorescein, eosin
Pink precipitate

A

Fajan’s method

17
Q

Analyte: Cl, Br, I
Indicator: FeSCN
Bloody red precipitate

A

Volhard method

ARC OBJECTIVES (3 decks)

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