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NO_2 is a dark brown colour. All of the other gases are colourless. Describe wha

ID: 477631 • Letter: N

Question

NO_2 is a dark brown colour. All of the other gases are colourless. Describe what will happen to the colour of the gas mixture from when the NO_2 and the CO are mixed until equilibrium is established. One mole of NO and one mole of CO_2 are mixed. If left alone at a constant temperature _______ will be established. Once this equilibrium is reached, will be colour be different than the equilibrium in question "j"? Given the reaction: CO_(g) + Cl_2(g) doubleheadarrow COCl_2(g) One mole of CO and one mole of Cl_2 are mixed at a certain temperature. On the axes below, draw graphs which show how the rates of the forward reaction and the reverse reaction vary with time. Give four characteristics of a system at equilibrium. ______ _____ _______ ______

Explanation / Answer

NO2 is a dark brown colour. All of the other gases are colourless. Describe what will

                 happen to the colour of the gas mixture from when the NO2 and the CO are mixed

                 until equilibrium is established.

answer :

It will be dark at first ( high [NO2]), then the colour will gradually get lighter

           until equilibrium is reached.

The final color will be a lighter brown

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k)         One mole of NO and one mole of CO2 are mixed. If left alone at a constant temperature

                  _________equilibrium___________________ will be established. Once this

                  equilibrium is reached, will the colour be different than the equilibrium in

                  question "j" ?

NO,

it will be the same colour, equilibrium can be approached from both sides of the reaction.

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question 3

1.      The rate of the forward reaction = The rate of the reverse reaction

         2.     Microscopic processes (the forward and reverse reaction) continue in a balance

which yields no macroscopic changes. (so nothing appears to be happening.)

3.     The system is closed and the temperature is constant and uniform throughout.

4.     The equilibrium can be approached from the left (starting with reactants) or from the right (starting with products