- #1
lomantak
- 10
- 0
Which side is the max entropy?
P4(s) + 6H2(g) -> 4PH3(g) (delta H = +37 kJ)
P4(s) + 6H2(g) -> 4PH3(g) (delta H = +37 kJ)
Chemical equilibrium is the state in which the forward and reverse reactions in a chemical system occur at equal rates, resulting in no net change in the concentrations of reactants and products over time.
Changes in temperature and pressure can affect the equilibrium position of a chemical reaction. Generally, increasing the temperature will favor the endothermic (heat-absorbing) reaction, while increasing the pressure will favor the reaction that produces fewer moles of gas.
Entropy is a measure of the disorder or randomness in a system. In a closed system, chemical reactions tend to move towards a state of maximum entropy, which is also the state of equilibrium.
The side of a chemical reaction with the most moles of gas or the most complex molecules typically has the maximum entropy. This can be determined by calculating the change in entropy for each side of the reaction using the formula ΔS = ΣnS(products) - ΣnS(reactants), where n is the number of moles and S is the molar entropy.
Chemical equilibrium can be shifted by changing the concentration of reactants or products, or by changing the temperature and pressure of the system. Le Chatelier's principle states that a system at equilibrium will shift in a direction that opposes any changes imposed upon it.