One more question:
Which of the following effectively increases the reactant concentration?
Is it:
heating the reactant mixture
or
increasing pressure
Thanks!
If it is a gas system an increase in pressure effectively increases the reactant concn.
Now that I've read the other question you have on rate, increasing pressure has little effect on liquids. Increasing T will increase the rate but I don't know that I like the idea that it "effectively increase the concn."
To determine which of the given options effectively increases the reactant concentration, let's analyze each option and understand how it affects reactant concentration:
1. Heating the reactant mixture: When you heat a reactant mixture, it typically increases the average kinetic energy of the molecules. This increased kinetic energy results in more frequent and energetic collisions between reactant molecules. As a result, the reaction rate increases, leading to a depletion in reactant concentration over time. Therefore, heating the reactant mixture does not effectively increase the reactant concentration.
2. Increasing pressure: In a gaseous reaction, increasing the pressure effectively increases the reactant concentration. This is because, according to Le Chatelier's principle, when we increase the pressure, the system will try to minimize the effect of the pressure change. In the case of a gaseous system, this can be achieved by shifting the equilibrium towards the side with fewer moles of gas. By increasing the pressure, the system is effectively favoring the side with a lower total volume of gas, which means it's favoring the side with more reactants. Consequently, the concentration of reactants increases.
Therefore, the correct answer is increasing pressure.