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slamgirl [31]
3 years ago
11

Equilibrium describes the balance that results from a forward and reverse reaction proceeding at equal rates. Since reaction rat

es depend on concentration, temperature, and pressure, any changes in these conditions may alter the forward and reverse rates unequally and disrupt the equilibrium.
Le Chatelier's principle states that after a change in conditions displaces a reaction from equilibrium

a) the reaction will undergo a temperature change in order to offset the disturbance.

b) the reaction proceeds to a new equilibrium in the direction that offsets the change.

c) the disturbance will always cause the forward reaction to be slower than the reverse reaction.

d) the change in conditions must be reversed in order to regain equilibrium.
Chemistry
1 answer:
Delvig [45]3 years ago
5 0

Answer:

b) the reaction proceeds to a new equilibrium in the direction that offsets the change.

Explanation:

According to Le Chatelier's principle, when a system experiences a constraint such as a change in pressure, temperature or concentration, the system will readjust itself in order to annul the constraint.

This simply means that when temperature, concentration or pressure is changed, a new equilibrium position is reached in order to offset the changes in the system.

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A gas that was cooled to 200 Kelvin has a volume of 65.8 L. If its initial volume was 132.4 L, what was its initial temperature?
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Answer:

Initial temperature, T1 = 99.4 Kelvin

Explanation:

<u>Given the following data;</u>

  • Initial volume, V1 = 65.8 Litres
  • Final temperature, T2 = 200 Kelvin
  • Final volume, V2 = 132.4 Litres

To find the initial temperature (T1), we would use Charles' law;

Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles' law is given by the formula;

\frac {V}{T} = K

\frac {V_{1}}{T_{1}} = \frac {V_{2}}{T_{2}}

Making T1 as the subject formula, we have;

T_{1} = \frac {V_{1}T_{2}}{V_{2}}

Substituting the values into the formula, we have;

T_{1} = \frac {65.8 * 200}{132.4}

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<em>Initial temperature, T1 = 99.4 Kelvin</em>

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