Dinitrogen tetraoxide is a colorless gas at room temperature. It can dissociate
ID: 540866 • Letter: D
Question
Dinitrogen tetraoxide is a colorless gas at room temperature. It can dissociate into nitrogen dioxide, which is a reddish brown gas N204(g)2 NO2(g) Three experiments were run starting with different initial amounts of N204(g)N2041o in the table). The systems were allowed to reach equilibrium and the concentrations for each gas were measured (in units of moles/Liter) For each of the boxes below, calculate the ratios indicated by the column heading. This will show the mathematical relationship that exists between the concentrations of NO2 and N204 at equilibrium Be sure to round to the correct number of significant figures Exp l 20,1 1 01 I 20 I ING I IN,0al 2 l ol 1 2041 IN012 I 201 1 3.8 2 3.1 3 2.3 2.98 2.3 2.64 1.8 2.15 1.2 Based on your calculations, indicate whether each statement is True (T) or False (F) 1. Each experiment started with a different initial concentration of N204 2. The ratio (INO2]/[N2equal to a constant value 3. The ratio (2 [NO2] IN204 is equal to a constant value 4. The ratio (INO21[N204 is equal to a constant value Previous Next 5. Each experiment reached a different set of equilibrium concentrationsExplanation / Answer
The calculations are tabualted and shown below
1. since the concentration of N2O4 for each experiment is different, this is false
2. neither ratio [NO2]/[N2O4] nor 2*[NO2]/[N2O4] is true.
3. The ratio [NO2]2/ [N2O4] is constant. This is equilibrium constant
4. Since the temperature is constant, all the experiment reaches same equilibrium value even though the concentrations at equilibrium are different.