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CONTROL TASKS

For reactions:

N 2(gas) + 3Н 2(gas)  2NH 3(gas), ΔН = –92 kJ;

Fe 2O 3(solid) + 3H 2(gas)  2Fe(solid) + 3H 2O(gas), ΔН = 97 KJ

1. Write the kinetic equations of the forward and reciprocal reactions.

2. Write an expression for the equilibrium constant of these reactions.

3. How many times will the velocity of the direct reaction increase or

decrease if the concentration of H 2 is increased by 3 times?

4. How many times will the velocity of the direct reaction increase or

decrease if the volume of the system is increased by 2 times?

5. How many times will the velocity of the reverse reaction increase or

decrease if the pressure in the system is increased by 3 times?

6. How many times the speed of direct reaction will increase if the

temperature changes from 100 °C to 130 °C? The reaction temperature coefficient

is 3.

7. Which side the reaction equilibrium will be shifted:

a) when the temperature rises;

b) when the pressure increases.

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