cgier 33

Question 1

– is a reaction that takes place in either directions and the forward and reverse proceed at the — and they reach —

Answer 1

• reversible reactions
• same rate
• equilibrium

Question 1

dynamic equilibrium is the equilibrium between two phases is —

Answer 1

physical equilibrium
h20 (l) –> h20 (g)

Question 2

when the rate of the forward and the reverse are equal and the concentration no longer change this is known as —-

Answer 2

chemical equilibrium

Question 3

relates the concentration of the reactants and the products at equilibrium in term of QUANTITY is — and is the ratio of —– raised to the power of their —-

Answer 3

-equilibrium constant (k)
(keq = products / reactants)
- equilibrium concentration
- stiocmetric coefficient

Question 4

the value of k is — regardless its —- and its depended on — and — and has no —

Answer 4

• constant , initial concnetration
• temp and the reaction
• unitless

Question 5

Kc refers to equilibrium concentration in —-
Kp refers to equilibrium concentration of —-

Answer 5

-moles/l aka molarity
- pressure

Question 6

-solids are excluded from the ratio bc they are fixed by its – and doesn’t —
- pure liquids are excluded from the ratio bc they are — and doesn’t —

Answer 6

• density , doesn’t change
• very high , doesn’t change

Question 7

the equilibrium constant can be expressed as — in gasses

Answer 7

partial pressures

Question 8

the k of the reverse reaction is the – of the forward reaction

Answer 8

• reciprocal
• k fwd = 1/ l rev

Question 9

is k&raquo_space; 1 , its — favoured because products are — than reactants at 25 celsius

Answer 9

• product favoured
• more than

Question 10

k «1 , its – favoured because the reactants are —

Answer 10

• reactant favoured
• reactants are more than products
• as 1.8 x 10 power 5

Question 11

if any external stress is applied to a system at equilibrium , the system adjust in such a way that the stress is partially offset to re-establish the equiliburm is —- principle and stresses can be:

Answer 11

• Le chattier principle
• change in concentration of products or reactants
• change in temp
• change in pressure or volume
• catalyst

Question 12

increasing the concentration of the reactants will move the equilibrium to the

Answer 12

right , products

Question 13

increase in temp in exothermic will move the equilibrium to the — and decreasing moves it —
increase in temp in endothermic moves it to the — and decreasing the temp moves it —

Answer 13

• reactant , product
• product , reactant

Question 14

increasing the pressure will shift the equilburm to the side with – number of moles
increasing the volume will shift the equiburm to side with –
if number of moles on reactant and products = then —

Answer 14

• few because the volume decreased
• more moles
• no effect on equilibrium

Question 15

during excerise there will be build up of lactic acid ( h+) because –

Answer 15

• more co2 and h+ will be exhaled
• so equilibrium moves to the left
• formala: c02 + h20 –> h2c03 –> h+ + hco3-
• aka hyperventilating , breathe into a paper bag to shift the equilibrium to the right if co2 is building up

Question 16

at sea level 02 pressure is —
at high altitudes 02 has a pressure of —

Answer 16

• 0.2 1atm
• 0.14 atm
• in lungs: hb + 402 –> hb (02)4
• shifts to the left Ieft in case of hypoxia aka deffincy in 02 which causes headaches , nausea and fatigue