Equilibrium Assignment - Virtual High School (VHS) - SCH4U
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1. The equilibrium constant for the reaction below is 0.18 at 25oC. PCl3(g) + Cl2(g) = PCl5(g) The following concentrations were measured from the reaction vessel: [PCl3(g)] = 0.0420 [Cl2(g)] = 0.0240 [PCl5(g)] = 0.00500 a. Is this system in equilibrium? Explain b. If not, in which direction will the system shift? 2. Write the Solubility Product Constant (Ksp) expression for the following solution at 275 oC. 3. Given the solubility of MgF2(s) is 8.4 x 10-7 M, calculate the value of Ksp for the reaction shown in question #2 at 275 oC.
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1. The equilibrium constant for the reaction
below is 0.18 at 25oC.
PCl3(g) + Cl2(g)
PCl5(g)
The following concentrations were measured
from the reaction vessel:
[PCl3(g)] = 0.0420
[Cl2(g)] = 0.0240
[PCl5(g)] = 0.00500
a. Is this system in equilibrium?
Explain
b. If not, in which direction will the
system shift?
a) 𝑄 =
𝑃𝐶𝑙5
𝑃𝐶𝑙3 𝐶𝑙2
𝑄 =
0.005
0.042 0.024
𝑄 = 4.96
Since 𝑄 > 𝐾𝑒𝑞 then the reaction is not at
equilibrium.
Please contact to get complete assignment
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