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CHEM 120 > Exam 2 > Flashcards

Exam 2 Flashcards

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1
Q

Oxidation Number on Hydrogen

A

+1 with nonmetals
-1 with metals

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2
Q

Oxidation Number on Oxygen

A

-2 in most compounds
-1 in peroxide (O2^2-)

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3
Q

Oxidation Number on Halogens

A

-1 always for F
-1 for other halogens except when combined with oxygen or other halogens

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4
Q

Oxidation Number on Molecule or Polyatomic Ion

A

Charge on molecule or polyatomic ion

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5
Q

Precipitation Reaction

A

dissolved substances react to form one or more solid products

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6
Q

Acid-Base Reaction

A

hydrogen ion (H^+) transferred from one chemical species to another

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7
Q

Redox Reaction

A

reaction where on or more elements undergoes a change in oxidation number

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8
Q

Oxidation

A

Loss of Electrons

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9
Q

Reduction

A

Gain of Electrons

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10
Q

Reducing Agent

A

species that get oxidized

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11
Q

Oxidizing Agent

A

species that gets reduced

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12
Q

Acid

A

substance that produces H30^+ when dissolved in water

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13
Q

Gravimetric Analysis

A

quantitative chemical analysis method involving the separation of an analyte from a sample by a physical or chemical process and subsequent mass measurements of the analyte, reaction product, and/or sample

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14
Q

Neutralization Reaction

A

reaction between an acid and a base to produce salt and water

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15
Q

Stoichiometric Factor

A

ratio of coefficients in a balanced chemical equation, used in computations relating amounts of reactants and products

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16
Q

Titration Analysis

A

quantitative chemical analysis method that involves measuring the volume of a reactant solution required to completely react with the analyte in a sample

17
Q

Base

A

substance that produces OH− when dissolved in water

18
Q

Aqueous Solution

A

solution in which water is the solvent

19
Q

Molarity (M)

A

molar concentration
moles of solute/volume of solution in L

20
Q

Torr

A

760 mmHg
equal to 1/760 of an Atm (atmosphere)

21
Q

1 Atm to PSI
1 psi to Atm

A

Atm*14.696
psi/14.696

22
Q

Dalton’s Law of Partial Pressure

A

the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases

CHEM 120 (10 decks)

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