Entropy and Gibbs energy exam question booklet
This is not just another set of exam questions with exam board style mark schemes. You can find plenty of
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Category: Calculations
Electrochemistry exam question booklet
This is not just another set of exam questions with exam board style mark schemes. You can find plenty of
Chemical equilibria exam question booklet
This is not just another set of exam questions with exam board style mark schemes. You can find plenty of
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
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
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.
Equilibrium constants and equilibrium concentrations
Now it is time to introduce the concept of the equilibrium constant, Kc. Kc is basically a ratio – the
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CFCs and the ozone layer
The chemistry that underlies the depletion of ozone in the stratosphere by chlorofluorocarbon molecules is really interesting – an application
How to calculate the relative abundance of an isotope
We can calculate the percentage abundances for each of the isotopes in an element if we know the mass number
Continue readingHow to calculate the relative abundance of an isotope