A) Consider the reaction. A(aq)↽−−⇀2B(aq)𝐾c=7.50×10−6 at 500 K If a 4.50 M sample of A is heated to 500 K, what is the c

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A)
Consider the reaction.
A(aq)↽−−⇀2B(aq)𝐾c=7.50×10−6 at 500 K
If a 4.50 M sample of A is heatedto 500 K, what is the concentrationof B at equilibrium?
B)
At a certain temperature, the 𝐾p for the decompositionof H2S is 0.700.
H2S(g)↽−−⇀H2(g)+S(g)
Initially, only H2S is present at a pressureof 0.204 atm in a closed container. What is thetotal pressure in the container at equilibrium?
C)
Phosphorus pentachloride decomposes according to thechemical equation
PCl5(g)↽−−⇀PCl3(g)+Cl2(g)𝐾c=1.80 at 250 ∘C
A 0.2288 mol sample of PCl5(g) isinjected into an empty 3.40 L reaction vessel heldat 250 ∘C.
Calculate the concentrationsof PCl5(g) and PCl3(g) at equilibrium.