Top answers

Chemistry
A Level

What is a buffer and what do you need to make one?

A buffer is a solution which resists changes in pH when alkaline or acidic solution is added to it.

Buffers are created based on the equilibrium of a proton donor/ acceptor...

FB
Answered by Felix B. Chemistry tutor
4592 Views

Why does the solubility of Group 2 hydroxides in water increase down the group?

Firstly, we must consider the thermodynamics involved

It is known that a reaction is spontaneous due to thermodynamic favourability if the Gibbs Free Energy is negative. This is further b...

EN
Answered by Eleni N. Chemistry tutor
15980 Views

Describe two different test tube reactions to identify the following organic compounds: propanal and benzoic acid.

There are several different answers one could make and an exam question would just require one for each. 

1) Propanal - from the ending "al" this is an aldehyde.

 ...

DD
Answered by Daniel D. Chemistry tutor
14018 Views

What is the difference in kinetics between a 0th, 1st and 2nd order reaction?

The rate of every reaction, R, relies on many different things including pressure, temperature or concentration of the reactants. To simplify this everything expect for concentration are inclu...

SP
6094 Views

Why are transition metal complexes coloured?

By definition, all transition metal ions have d orbitals. These are normally degenerate, lying at the same energy level as there is nothing to break the symmetry.

However, in the presence...

ZT
Answered by Zac T. Chemistry tutor
7103 Views

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