Chemistry, 07.04.2020 17:24 19thomasar

In which of the following reactions will Kc= Kp?A) 4 NH3(g) + 3 O2(g) ⇌2 N2(g) + 6 H2O(g)B) 2 SO3(g) + 2 NO(g) ⇌2 SO2(g) + 2 NO2(g)C) 4 N2(g) + 2 O2(g) ⇌4 N2O(g)D) 6 SO2(g) + 3 O2(g) ⇌6 SO3(g)E) None of theabove reactions have Kc= Kp

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Answer from: carterkelley12oz0kp1

$2SO_3(g)+2NO(g)\rightleftharpoons 2SO_2(g)+2NO_2(g)$

Explanation:

Relation of K_p with K_c is given by the formula:

$K_p=K_c(RT)^{\Delta ng}$

where,

K_p = equilibrium constant in terms of partial pressure

K_c = equilibrium constant in terms of concentration

R = Gas constant

T = temperature

$\Delta n_g$ = change in number of moles of gas particles = $n_{products}-n_{reactants}$

K_p=K_c when $\Delta n_g$ = 0

a) $4NH_3(g)+3O_2(g)\rightleftharpoons 2N_2(g)+6H_2O(g)$

$\Delta n_g$ = change in number of moles of gas particles = 8-7=1

b) $2SO_3(g)+2NO(g)\rightleftharpoons 2SO_2(g)+2NO_2(g)$

$\Delta n_g$ = change in number of moles of gas particles = 4-4=0

c) $4N_2(g)+2O_2(g)\rightleftharpoons 4N_2O(g)$

$\Delta n_g$ = change in number of moles of gas particles = 4-6=-2

d) $6SO_2(g)+3O_2(g)\rightleftharpoons 6SO_3(g)$

$\Delta n_g$ = change in number of moles of gas particles = 6-9=-3

Thus for reaction , $2SO_3(g)+2NO(g)\rightleftharpoons 2SO_2(g)+2NO_2(g)$ , K_p=K_c as $\Delta n_g$ = 0

Answer from: Quest

the balanced equation for reaction of ca metal with o2 to produce cao is as below

2 ca+ o2→ 2 cao2

explanation

the reaction is balanced since the number of atoms in reactant side is equal to number of atoms in product side. for example they are 2 atom of ca in reactant side and 2 atoms of ca in the product side.

the process is a meet the requirement of redox reaction because : calcium is oxidized from oxidation state 0 to 2+ while oxygen is reduced from oxidation state 0 to 2-

Answer from: Quest

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