equilibria Flashcards

1
Q

dynamic equlibrium

A

rate of forward and backward reactions are equal and concentration of product and reactant remain constant

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2
Q

Le chatliers principle

A

if the conditions of a system in equilibrium are changed, the position of the equilibrium moves as to reduce that change

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3
Q

brosted lowry strong acid

A

a proton donor, fully ionised in its aqueous solution

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4
Q

bronsted lowry weak acid

A

a proton donor, partially ionised in its aqueous solution

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5
Q

he need for a closed system in order to establish

A

dynamic equilibrium

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6
Q

Reversible reaction:

A

a reaction in which products can be changed back to reactants by reversing the conditions

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7
Q

by le chatliers principle when temperature is increased

A

the system opposes the change by favouring the endothermic side

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8
Q

by le chatliers principle when pressure is increased

A

the system opposes the change by favouring the side with fewer gas moles

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9
Q

by le chatliers principle when reactant concentration is increased

A

the system opposes the change by favouring the forward reaction

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10
Q

Equilibrium constant expressed in terms of concentration

A
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11
Q

Equilibrium constant expressed in terms of partial pressure

A
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12
Q
A

equi. towards products side

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13
Q
A

equi. towards reactants side

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14
Q

Kc/Kp changes only with changes in

A

temperature

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15
Q

The amount of reactants that disappear will always appear in the

A

the products in the same ratio as present in a balanced equation

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16
Q

An acid is a

A

proton (H+) donor

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17
Q

A bases is a

A

proton (H+) acceptor

18
Q

Amphoteric:

A

substances that can act like bases or acids

19
Q

Strong acid:

A

an acid that dissociates completely in solution (e.g., HCl)

20
Q

Weak acid

A

an acid that dissociates partially in solution (e.g., ethanoic acid)

21
Q

Strong base:

A

a base that dissociates completely in solution (e.g., NaOH)

22
Q

Weak base:

A

a base that dissociates partially in solution (e.g., ammonia)

23
Q

Strong acids/bases react more vigorously than

A

weak acids/bases.

24
Q

Strong bases have higher

A

pH values than weak bases.

25
Q

When an acid reacts with a base

A

salt & water are formed

26
Q

titration of strong acid with strong base

A
27
Q

titration of strong acid w weak base

A
28
Q

titration of weak acid w weak base

A
29
Q

titration of weak acid w strong base

A
30
Q

conditions for habers process

A
31
Q
A
32
Q

hydrochloric acid,

A

HCl

33
Q

sulfuric acid

A

H2SO4,

34
Q

nitric acid

A

HNO3

35
Q

ethanoic acid,

A

CH3COOH

36
Q

sodium hydroxide,

A

NaOH,

37
Q

potassium
hydroxide,

A

KOH,

38
Q

ammonia,

A

NH3

39
Q

WATER PH

A

7

40
Q
A