Phosphine (PH3) decomposes at elevated temperatures, yielding gaseous P2 and H2: 2PH3(g)⇌P2(g)+3H2(g) Kp= 398 at 873 K
When a mixture of PH3, P2, and H2 comes to equilibrium at 873 K, PP2= 0.422 atm and PH2= 0.822 atm. What is PPH3?

Phosphine (PH3) decomposes at elevated temperatures, yielding gaseous P2 and H2: 2PH3(g)⇌P2(g)+3H2(g) Kp= 398 at 873...
For the equilibrium 2PH3(g) ⇌ P2(g) +3H2(g), the equilibrium partial pressures are PPH3=0.049 atm, PP2=0.498 atm, and PH2=0.776 atm at 738K. Calculate Kp.
QUESTION 19 For the equilibrium 2PH3(g) ⇌ P2(g) +3H2(g), the equilibrium partial pressures are PPH3=0.029 atm, PP2=0.699 atm, and PH2=0.557 atm at 738K. Calculate Kp. *Please report 3 significant figures. Numbers only, No unit. No scientific notation.
1. At equilibrium, the concentrations of reactants and products can be predicted using the equilibrium constant, Kc, which is a mathematical expression based on the chemical equation. For example, in the reaction aA+bB⇌cC+dD where a, b, c, and d are the stoichiometric coefficients, the equilibrium constant is Kc=[C]c[D]d[A]a[B]b where [A], [B], [C], and [D] are the equilibrium concentrations. If the reaction is not at equilibrium, the quantity can still be calculated, but it is called the reaction quotient, Qc, instead...
At elevated temperatures N2 and H2 react according to the following equation: N2(g) + 3H2(g) → 2NH3(g) When 1.000 mol of N2 and 2.800 mol of H2 were placed in a 10.00 L vessel at 600.0 K and allowed to come to equilibrium, the mixture was found to contain 0.514 mol of NH3. What is the value of KC?