Writing a pressure equilibrium constant expression

Hydrogen chloride decomposes to form hydrogen and chlorine, like this: 2HCl(g)→H2(g)+Cl2(g)Write the pressure equilibrium constant expression for this reaction.

PH2PCl2/P^2HCl

Hydrogen iodide decomposes to form hydrogen and iodine, like this: 2HI(g)→H2(g)+I2(g) Write the pressure equilibrium constant expression for this reaction.

PH2PI2/P^2HI

Nitrogen monoxide and hydrogen react to form nitrogen and water, like this: 2NO(g)+2H2(g)→N2(g)+2H2O(g) Write the pressure equilibrium constant expression for this reaction.

PN2P^2H2O/P^2NOP^2H2

Ammonia decomposes to form nitrogen and hydrogen, like this: 2NH3(g)→N2(g)+3H2(g) Write the pressure equilibrium constant expression for this reaction.

PN2P^3H2/P^2NH3

Phosphorus tribromide decomposes to form phosphorus and bromine, like this: 4PBr3(g)→P4(g)+6Br2(g) Write the pressure equilibrium constant expression for this reaction.

PP4P^6Br2/P^4PBr3

Hydrogen bromide and oxygen react to form bromine and water, like this: 4HBr(g)+O2(g)→2Br2(g)+2H2O(g) Write the pressure equilibrium constant expression for this reaction.

P^2Br2P^2H2O/P^4HBrPO2

Hydrogen and chlorine react to form hydrogen chloride, like this: H2(g)+Cl2(g)→2HCl(g) Write the pressure equilibrium constant expression for this reaction.

P^2HCl/PH2PCl2

Nitrogen and hydrogen react to form ammonia, like this: N2(g)+3H2(g)→2NH3(g) Write the pressure equilibrium constant expression for this reaction.

P^2NH3/PN2P^3H2

Nitrogen and water react to form nitrogen monoxide and hydrogen, like this: N2(g)+2H2O(g)→2NO(g)+2H2(g) Write the pressure equilibrium constant expression for this reaction.

P^2NOP^2H2/PN2P^2H2O

Sulfur trioxide decomposes to form sulfur dioxide and oxygen, like this: 2SO3(g)→2SO2(g)+O2(g) Write the pressure equilibrium constant expression for this reaction.

P^2SO2PO2/P^2SO3

Sulfur dioxide and oxygen react to form sulfur trioxide, like this: 2SO2(g)+O2(g)→2SO3(g)Write the pressure equilibrium constant expression for this reaction.

P^2SO3/P^2SO2PO2

Bromine and water react to form hydrogen bromide and oxygen, like this: 2Br2(g)+2H2O(g)→4HBr(g)+O2(g)Write the pressure equilibrium constant expression for this reaction.

P^4HBrPO2/P^2BrP^2H2O

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2Cl2(g)+2H2O(g)→4HCl(g)+O2(g) Write the pressure equilibrium constant expression for this reaction.

P^4HClPO2/P^2Cl2P^2H2O

Nitrogen monoxide and water react to form ammonia and oxygen, like this: 4NO(g)+6H2O(g)→4NH3(g)+5O2(g) Write the pressure equilibrium constant expression for this reaction.

P^4NH3P^5O2/P^4NOP^6H2O

Phosphorus and bromine react to form phosphorus tribromide, like this: P4(g)+6Br2(g)→4PBr3(g) Write the pressure equilibrium constant expression for this reaction.

P^4PBr3/PP4P^6Br2