equilibrium and how far

Question 1

describe how equilibrium is established. A <–> B

Answer 1

• as forward reaction begins, concentration of A decreases, and the concentration of b increases.
• as backwards reactions begin to occur
• because more B is present, the rate of the backwards reaction increases.
• because more A is used up, the rate of the forwards reaction decreases.

Question 2

describe how equilibrium is established. A <–> B (exam technique)

Answer 2

• describe concentration of A for forwards reaction
• describe concentration of B as forwards reaction occurs
• describe rate of backwards reaction (why?)
• describe rate of forwards reaction (why?)

Question 3

what brackets are used when talking about concentration constant Kc?

Answer 3

[ ]

Question 4

what brackets do we use when calculating pressure constant Kp?

Answer 4

( )

Question 5

Kc value of 1 indicates..

Answer 5

position of equilibrium is halfway between reactants and products.

Question 6

Kc higher than 1 indicates..

Answer 6

equilibrium position has shifted right. (there is a higher concentration of product)

Question 7

Kc lower than 1 indicates…

Answer 7

equilibrium position has shifted left (there is a higher concentration of reactant)

Question 8

How to work out partial pressure

Answer 8

mol fraction x total pressure

Question 9

partial pressure meaning

Answer 9

the contribution each gas in a mixture makes towards the total pressure of the container.