Viscosity is governed by the strength of intermolecular forces and especially by the shapes of the molecules of a liquid. Liquids whose molecules are polar or can form hydrogen bonds are usually more viscous than similar nonpolar substances.
Although it is omitted, the reaction equation for the decomposition of phosphorus pentachloride is:
PCl₅ → PCl₃ + Cl₂
The equilibrium constant's equation then becomes:
Kc = [PCl₃]*[Cl₂] / [PCl₅]
Kc = (0.02 * 0.02) / 0.0095
Kc = 0.042
The equilibrium constant is 0.042.
Answer:
The potential energy of the products is greater than the potential energy of the reactants
Explanation:
i just took the test
Answers are:
1) ΔH is negative because that is combustion reaction and heat is released, enthalpy of combustion is -2877.5 kJ/mol.
2) ΔS is positive, because there more molecules on the right side of balanced chemical reaction, standard molar entropy is <span>310.23 J/mol</span>·<span>K.
</span>3) ΔG = ΔH - TΔS.
ΔG = -2877.5 kJ/mol - 298 K · 310.23 J/mol·K.
ΔG = -2969.95 kJ/mol.
Explanation:
The equilibrium constant of the reaction = 
Initial concentration of HI = 0.311 M
After addition 0.174 mol of HI(g)
Concentration of HI added = 
New concentration of HI = 0.311 M + 0.174 M = 0.485 M
Initial concentration:
0.311 M 
At equilibrium:
(0.485 M - x) 
![K_{eq}=\frac{[H_2][I_2]}{[HI]^2}](https://tex.z-dn.net/?f=K_%7Beq%7D%3D%5Cfrac%7B%5BH_2%5D%5BI_2%5D%7D%7B%5BHI%5D%5E2%7D)
Equilibrium concentrations:
![[HI]=0.485 M-x = 0.485 M - 0.01586 M= 0.46914 M](https://tex.z-dn.net/?f=%5BHI%5D%3D0.485%20M-x%20%3D%200.485%20M%20-%200.01586%20M%3D%200.46914%20M)
![[H_2]=[I_2]=4.71\times 10^{-2} M+x=4.71\times 10^{-2} M+0.01586 M](https://tex.z-dn.net/?f=%5BH_2%5D%3D%5BI_2%5D%3D4.71%5Ctimes%2010%5E%7B-2%7D%20M%2Bx%3D4.71%5Ctimes%2010%5E%7B-2%7D%20M%2B0.01586%20M)
![[H_2]=[I_2]=0.06296 M](https://tex.z-dn.net/?f=%5BH_2%5D%3D%5BI_2%5D%3D0.06296%20M)
