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Rabu, 04 Juli 2012

task : le chatelier principle


1.      Known to the following reaction:
Fe ^ (3 +) (aq) + SCN ^ - (aq) Fe (SCN) ^ (2 +) (aq)
Estimate the equilibrium shifts toward equilibrium if it:
Fe3 + ions are added
Added ion-HPO42
Explain!

2.      Notice the following equilibrium reaction:
2NO2 (g) N2O4 (g) ΔH = -58.8 kJ
If the system into equilibrium temperature and pressure were enlarged, explain what happened?

3.      2NO2 (g) N2O4 (g) ΔH = -59.8 kJ
At this equilibrium, helium gas was added until the total pressure of twice the original pressure, explain what happens at equilibrium?

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