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Benzene has delocalised pi- electrons spread over all 6 Carbon atoms in the ring structure. Therefore, there is insufficient electron density above and below any two carbon atoms in the structure so be...

Buffer solution is a system that minimises the change in pH when a small amount of acid or base is added. There are two types of buffer solutions- alkaline buffer solution and acidic buffer solution. The ...

First, look at the Periodic Table. Potassium is in group 1 so has a +1 charge, Li⁺Sulphates always have a -2 charge, SO4 ^2-Now combine two ions together so we can ge...

Rate of reaction is a change in concentration of a reactant or product, per unit time, measured in dm³s-1. You can calculate the rate of reaction from the graph- plot the graph of concantration...

The atomic number, Z, is the number of protons in the nucleus. The mass number ,A, is the total number of protons and neutrons in the atom.