List the equilibria from largest to smallest equilibrium constant. List the equi

Question

List the equilibria from largest to smallest equilibrium constant.

List the equilibria from largest to smallest equilibrium constant.

b

Identify the proper form of the equilibrium-constant expression for the equation

N2(g)+O2(g)2NO(g)

Identify the proper form of the equilibrium-constant expression for the equation

c

The equilibrium-constant of the reaction

NO2(g)+NO3(g)N2O5(g)

is K=2.1×1020. What can be said about this reaction?

The equilibrium-constant of the reaction

is . What can be said about this reaction?

There are no reactants left over once the reaction reaches equilibrium.

d

The acid HOCl (hypochlorous acid) is produced by bubbling chlorine gas through a suspension of solid mercury(II) oxide particles in liquid water according to the equation

2HgO(s)+H2O(l)+2Cl2(g)2HOCl(aq)+HgOHgCl2(s)

What is the equilibrium-constant expression for this reaction?

The acid  (hypochlorous acid) is produced by bubbling chlorine gas through a suspension of solid mercury(II) oxide particles in liquid water according to the equation

What is the equilibrium-constant expression for this reaction?

K I2>K Cl2>K Br2 KBr2>KCl2>KI2 KBr2>KI2>KCl2 KCl2>KI2>KBr2 KI2>KBr2>KCl2 KCl2>KBr2>KI2

Explanation / Answer

List the equilibria from largest to smallest equilibrium constant.

KCl2>KBr2>KI2

note that

very polar species ar elikelty to ionize, therefore Ka wil be larger

the electronegativity trend goes as Cl > Br > I

then

KCl2>KBr2>KI2

b)

N2(g)+O2(g)2NO(g)

K = [products]^p /[reatants]^r

K = ([NO])^2/([N2][O2])

c

NO2(g)+NO3(g)N2O5(g)

is K=2.1×1020.

if K <1, then assume that

concentraiton of NO2 and NO3 are much more favoured than N2O5

D)

The expression:

2HgO(s)+H2O(l)+2Cl2(g)2HOCl(aq)+HgOHgCl2(s)

note that solids and liquids will not show in equilibrium constant

so

K = [HOCl]^2 / [Cl2]^2

At equilibrium the concentration of reactants is much greater than that of products.

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