Understanding the rate law and orders of reaction
The reaction between hydroxide ions and bromoethane involves a collision between a molecule of each of the reactants, which means
Continue readingUnderstanding the rate law and orders of reaction
Category: Physical chemistry
What does the rate of a reaction depend on?
Just because a reaction is feasible, it doesn’t mean that it will happen at a rate by which we are
Deciding whether a precipitate will form
We can cause a sparingly soluble salt to precipitate out of solution if the product of the concentration of the
What is the common ion effect?
Silver chloride is a sparingly soluble salt. AgCl(s) ⇌ Ag+(aq) + Cl–(aq) Ksp = [Ag+(aq)] [Cl–(aq)] = 2.0 x 10-10
What is the solubility product?
Many ionic compounds are sparingly soluble – a good example is barium sulphate which has a solubility of 1.05 x
Understanding the relationship between Kc and Kp
We can derive a value for the equilibrium constant in a gaseous equilibrium system either using partial pressures, Kp, or
Continue readingUnderstanding the relationship between Kc and Kp
Calculating Kp, the equilibrium constant, for a gaseous system.
For reversible reactions taking place in the gaseous phase it is more straightforward to think in terms of pressure rather
Continue readingCalculating Kp, the equilibrium constant, for a gaseous system.
Why don’t reactions at equilibrium go to completion?
To complete our understanding of systems that have achieved equilibrium, we need to look at the position of equilibrium through
Continue readingWhy don’t reactions at equilibrium go to completion?
How to find the equilibrium constant and equilibrium concentrations for a reaction
Now it is time to introduce the concept of the equilibrium constant, Kc. Kc is basically a ratio – the
Continue readingHow to find the equilibrium constant and equilibrium concentrations for a reaction
What is le Chatelier’s Principle?
When we have a chemical reaction that has reached a state of dynamic equilibrium, there will be one particular set