Reversible reactionsd

Question 1

As reactants react, their concentrations fall so forward reaction will slow down but as more and more products are made their concentrations , backward reaction will speed up then….

Answer 1

After a while forward reaction same rate as backward one there at equilibrium

Question 2

what is dynamic equilibrium

Answer 2

Both reaction are happening but no overall effect this means concentrations have reached balance and wont change

Question 3

Equilibrium reactions can only take place in … system

Answer 3

closed system so no product / reactant can escape

Question 4

If equilibrium lies to the right what does this mean

Answer 4

Concentration of products is greater on tan that of reactants

Question 5

If equilibrium lies of the left what does this mean

Answer 5

Concentration of reactants is greater than products

Question 6

Position of equilibrium depends on what conditions

Answer 6

Temperature

pressure

concentration

Question 7

How does temperature affect equilibrium

Answer 7

ammonium chloride = ammonium + hcl

heating this reaction will lead to equilibrium moving to the left

and cooling to the right

Question 8

In reversible reactions if one direction is exothermic the other is

Answer 8

Endothermic

energy transferred from surroundings by the endothermic reaction is equal to the energy transferred it the surroundings during exothermic reaction

Question 9

Endothermic and exothermic reaction example (thermal decomposition of hydrated copper sulfate)

Answer 9

If you heat blue hydrated copper sulfate crystals , it drives off water and leaves white anhydrous(without water) sulfate powder . THIS IS ENDOTHERMIC

If you then add a couple of drops of water TO the white powder you get the blue crystal back again . EXOTHERMIC