chemical equilibrium

Question 1

what does the chemical equilibrium A + B⇌ C+D show?

Answer 1

-as reactants A & B get used up the forward reaction slows down
-as more product C & D is formed, the reverse reaction speeds up
-after a while the forward reaction rate = reverse reaction rate

Question 2

when does a reaction reach dynamic equilibrium?

Answer 2

when the forward and reverse reactions continue at an equal rate

Question 3

what is the formula for the haber process?

Answer 3

N2 (g) + 3H2 (g) ⇌ 2NH3 (g)

Question 4

what is the law of mss action?

Answer 4

at constant T fir the reaction:aA + bB+cCN2 (g) + 3H2 (g) ⇌

Question 5

what does Kc show?

Answer 5

whether the reactants or products are favoured

Question 6

what do the different values of Kc mean?

Answer 6

-large values of Kc(>10^3)=equilibrium favours products strongly
-intermediate values of Kc (10^3<Kc>10^-3)=reactants and products are in similar amounts at equilibrium
-smaller values of Kc (<10^-3)=equilibrium favours reactants strongly</Kc>

Question 7

what does the law of mass of action apply to for heterogenous systems?

Answer 7

-only gaseous or liquid states

Question 8

what does le chatelier’s principle state?

Answer 8

-if a constraint (e.g change in pressure, temp or concentration of a reactant) is applied to a system in equilibrium, the equilibrium will shift to counteract the effect of the constraint

Question 9

info from slide 18 forward needs to be written