For the homogeneous reaction, 4NH3+5O2 leftharpoons 4NO+6H2O the equilibrium constant Kc has the units

Question

For the homogeneous reaction, 4NH3+5O2 leftharpoons 4NO+6H2O the equilibrium constant Kc has the units (A)  conc.+10  (B)  conc.+1  (C)  conc.-1  (D) It is dimensionless

Tardigrade Admin · Accepted Answer

For the given reaction, Δ ng=np-nr (where, np= number of moles of gaseous products and nr= number of moles of gaseous reactants.) Δ ng=(6+4)-(4+5)=+1 Units of Kc=(concentration)Δ ng =(concentration)+1

Q. For the homogeneous reaction,
$4 N H_{3} + 5 O_{2} ⇌ 4 NO + 6 H_{2} O$
the equilibrium constant $K_{c}$ has the units

$co n c .^{+ 10}$

$co n c .^{+ 1}$

$co n c .^{- 1}$

It is dimensionless

For the given reaction, $Δ n_{g} = n_{p} - n_{r}$
(where, $n_{p} =$ number of moles of gaseous products and
$n_{r} =$ number of moles of gaseous reactants.)
$Δ n_{g} = (6 + 4) - (4 + 5) = + 1$
Units of $K_{c} = (co n ce n t r a t i o n)^{Δ n_{g}}$ $= (co n ce n t r a t i o n)^{+ 1}$

Q. For the homogeneous reaction, 4NH3​+5O2​⇌4NO+6H2​O the equilibrium constant Kc​ has the units

conc.+10

conc.+1

conc.−1