The equilibria between NO2 and N2O4 is provided below:N2O4(g) ⇌ 2NO2(g)Fill in the table based on the observed colour change of your NO2/N2O4 mixture in response to changes in temperature.Colour change Forward/reverse reaction favouredLow temperature High temperature
Question
The equilibria between NO2 and N2O4 is provided below:N2O4(g) ⇌ 2NO2(g)Fill in the table based on the observed colour change of your NO2/N2O4 mixture in response to changes in temperature.Colour change Forward/reverse reaction favouredLow temperature High temperature
Solution
At low temperatures, the colour of the mixture will become lighter or even colourless. This is because the equilibrium shifts to the left, favouring the forward reaction (N2O4 formation). N2O4 is colourless, hence the lighter colour.
Colour change: Lighter/Colourless Forward/reverse reaction favoured: Forward
At high temperatures, the colour of the mixture will become darker (brown). This is because the equilibrium shifts to the right, favouring the reverse reaction (NO2 formation). NO2 is brown, hence the darker colour.
Colour change: Darker/Brown Forward/reverse reaction favoured: Reverse
Similar Questions
At a particular temperature, K = 4.0 x 10-7 for thereaction:N2O4(g) <-->2NO2(g)In an experiment, 1.0 mol N2O4 is placedin a 10 L vessel. Calculate the concentrations ofN2O4 and NO2 when this reactionreaches equilibrium.
The standard free energy change (ΔG°) for 50% dissociation of N2O4 into NO2 at 27 °C and 1 atm pressure is −x J mol−1 . The value of x
Consider the following reaction at equilibrium. If the temperature is decreased, which way will the system shift to return to equilibrium?N2O4(g) + heat ⇌ 2NO2(g)Equilibrium will shift towards the reactants.Equilibrium will shift towards the reactants, and then shift towards the products.Equilibrium will shift towards the products, and then shift towards the reactants.Equilibrium will shift towards the products.
Which way will the equilibrium shift, for the endothermic reaction below, if the temperature is increased (and everything else is held constant)?N2O4(g) 2NO2(g)Group of answer choicesTo the left (more reactants)To the right (more products)It will not shift
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