solid diarsenic trioxide reacts with Flourine gas to produce liquid arsenic pentaflouride and oxygen gas. Write the Qc for this reaction
You don't have any concentrations listed so I can't write Qc. The equation is
2As2O3(s) + 10F2(g) ==> 4AsF5(l) + 3O2(g)
Qc or Kc expresion is (O2)^3/(F2)^10
To write the equilibrium constant expression (Qc) for the reaction between solid diarsenic trioxide (As2O3) and fluorine gas (F2) to produce liquid arsenic pentafluoride (AsF5) and oxygen gas (O2), we need to write the balanced chemical equation first.
The balanced chemical equation is:
As2O3(s) + 5F2(g) → 2AsF5(l) + 3O2(g)
From the balanced equation, we can determine the stoichiometric coefficients for each species involved in the reaction. The coefficients are as follows:
As2O3 : 1
F2 : 5
AsF5 : 2
O2 : 3
Now, we can write the expression for Qc using the molar concentrations of the products (AsF5 and O2) divided by the molar concentrations of the reactants (As2O3 and F2), each raised to their respective stoichiometric coefficients:
Qc = ([AsF5]^2 * [O2]^3) / ([As2O3] * [F2]^5)
Note that the concentrations used for Qc should be at equilibrium.
To write the expression for the reaction quotient, Qc, you need to identify the balanced chemical equation for the reaction.
The balanced equation for the reaction between solid diarsenic trioxide (As2O3) and fluorine gas (F2) to produce liquid arsenic pentafluoride (AsF5) and oxygen gas (O2) can be written as follows:
2 As2O3 (s) + 10 F2 (g) → 4 AsF5 (l) + 6 O2 (g)
Now that we have the balanced equation, we can write the expression for the reaction quotient, Qc. The expression for Qc is obtained by writing the concentrations of the products divided by the concentrations of the reactants, each raised to the power of their respective stoichiometric coefficients.
Qc = ([AsF5]^4 * [O2]^6) / ([As2O3]^2 * [F2]^10)
Please note that the concentrations of pure solids (As2O3 and AsF5) do not affect the value of Qc, so they are omitted from the expression. However, the concentration of F2 gas must be considered.
Remember to check the units of concentration (usually in mol/L) and make sure to use the correct coefficients from the balanced equation.