Suggest four ways in which the concentration of PH3 could be increased in an equilibrium described...

Suggest four ways in which the concentration of PH3 could be increased in an equilibrium described by the following equation: P4 (g) + 6H2 (g) ⇌ 4PH3 (g) ΔH = 110.5 kJ

Solutions

Expert Solution

The amount of can be increased when the equilibrium shifts towards right or forward reaction is favored. According to Le Chateliers Principle, equilibrium shifts in the direction of change imposed.

The following 4 methods increase the concentration of :

1. By adding more to the mixture at equilibrium. When the amount of in the reaction mixture is increased, the equilibrium will shift in the direction in which is consumed. Hence, forward reaction is favored. More of will be produced.

2. By adding more to the mixture at equilibrium. When the amount of in the reaction mixture is increased, the equilibrium will shift in the direction in which is consumed. Hence, forward reaction is favored. More of will be produced.

3. By raising the temperature of the system or supplying heat to the system.

Since, the value of is positive, it is an endothermic reaction. Hence, heat is consumed in the forward reaction. Thus, if heat is supplied to the mixture, or temperature of the system is increased, the equilibrium will shift in a direction which consumes the heat and thereby, decreases the temperature. Hence, forward reaction will be favored. More of will be produced.

4. By removing some from the system. When the amount of in the reaction mixture is decreased, the equilibrium will shift in the direction in which is produced. Hence, forward reaction is favored. More of will be produced.

queen_honey_blossom answered 1 year ago

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