extra Flashcards

1
Q

for collisions to be successful reactants must

A

have enough kinetic energy and favourable geometry

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2
Q

which things most apply to all equilibrium systems

A

forward and reverse rate are equal
macroscopic properties are constant
can be achieved from either direction

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3
Q

a strong oxidation agent has

A

strong attraction for electrons

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4
Q

a strong reducing agent has a

A

weak attraction for electrons

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5
Q

minimum energy need for a successful collision is

A

activation energy

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6
Q

as an activated complex changes to products

A

potential energy changes to kinetic

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7
Q

when molecules approach each other what happens to kinetic energy and potential energy

A

kinetic: decreasing potential: increasing

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8
Q

when a catalyst is added to a reaction

A

the heat increase and a new mechanism is provided

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9
Q

in every solubility equilibrium the rate of dissolving

A

equals to the rate of crystallization

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10
Q

a test that is safe to distinguish a strong base from weak is

A

electrical conductivity

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11
Q

what changes ken

A

temperature

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12
Q

what is kinetic energy

A

energy of motion

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13
Q

what is potential energy

A

stored energy

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14
Q

how to tell strongest acid

A

highest Ka

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15
Q

a conj base of an acid is made by

A

removing a proton from the acid

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16
Q

what titrations equivalent point at ph > 7.00

A

weak acid and strong base

17
Q

a buffer contains equal moles of

A

weak acid and conj base

18
Q

titration with an equivalence point with a ph less than 7

A

weak base and strong acid

19
Q

what gas does an electrochemical cell

A

hydrogen

20
Q

when are the graph questions different

A

H conc and ph