inorganic- chemical equilibrium

Question 1

a chemical reaction is in equilibrium when

Answer 1

the concentration of reactants and products remains constant

Question 2

The equilibrium constant(k) is not affected

Answer 2

by changes in concentration or pressure

Question 3

Value ok K(equilibrium constant) is affected by changes in temperature

Answer 3

increase in temperature results in:
increase for endothermic reactions(more product)
decrease for exothermic reactions(less product)

Question 4

strong acids

Answer 4

completely dissociate into ions in solution. Strong acids include hydrochloric acid and nitric and sulphuric acids.(inorganic acids)

Question 5

strong bases

Answer 5

completely dissociate into ions in solution. these include soluble metal hydroxides

Question 6

weak acids

Answer 6

partially dissociated into ions in aqueous solution. weak acids include ethanoic acid, sulphurous and carbonic acids(organic acids)

Question 7

weak bases

Answer 7

partially dissociated into ions in aqueous solution. these include ammonia and amines.

Question 8

water is amphoteric which means

Answer 8

it can behave as both a base and an acid

Question 9

difference between strong and weak acids

Answer 9

weak acids have higher pH than strong acids
weak acids have a lower conductivity
weak acids react at a slower rate

Question 10

difference between strong and weak bases

Answer 10

weak bases have lower pH than strong acids
weak bases have a lower conductivity
weak bases react at a slower rate

Question 11

an indicator is just a

Answer 11

weak acid. in an aqueous solution, the colour of the acid indicator is different to that of the conjugate base.