1) What’s the correct expression for the following equilibrium: H2 + I2 ↔ 2HI a) b) c) d) 2) What are the correct units? a) mol-1 dm3 b) no units c) mol dm-3 d) mol2 dm-6 3) What are the correct units? a) no units b) mol2 dm-6 c) mol-2 dm6 d) mol dm-3 4) What’s the correct expression for the following equilibrium: 3A2 + 2B ↔ 4C +D2 a) b) c) d) 5) Kc = 200mol-1dm3, 2SO2 +O2 ↔ 2SO3, ∆H is negative. What will happen to Kc if I increase the temperature? a) It will stay the same b) It will get bigger c) It will get smaller d) I don't know 6) Kc = 0.5mol-1dm3, PCl5 ↔ PCl3 +Cl2 ∆H is positive. What will happen to Kc if I decrease the temperature? a) It will stay the same b) It will get bigger c) It will get smaller d) I don't know 7) What are the correct units? a) mol3 dm-9 b) mol dm-3 c) mol-3 dm9 d) mol2 dm-6 8) Extension: What will happen to Kc when an iron catalyst is added to the following equilibrium: 2NH3 ↔ N2 + 3H2, ∆H is positive. a) It will increase b) It will decrease c) It will stay the same d) I don't know

Equilibrium Constant Quiz1

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