Top answers

Chemistry
A Level

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
16464 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
14508 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
6371 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
7523 Views

What is chirality?

Sometimes two molecules can exist as non-superimposable mirror-images. That is to say, the mirror image of a molecule cannot be exactly placed on top of the original molecule.

A good exam...

PB
Answered by Patrick B. Chemistry tutor
8906 Views

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