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Chemistry

A Level

At room temperature and pressure, the first 4 alkanes are all gases, but the first 4 alcohols are all liquids. Explain this.

Alkanes are non-polar so only have London forces between them. These intermolecular bonds are weak, and easily overcome with little energy. This means that alkanes have a low boiling point hence they are ...

Answered by Ayolola E. • Chemistry tutor

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Draw the mechanism for the reaction of an acid chloride with an alcohol to form an ester

First thing to remember is that when drawing curly arrows, the arrows start where the electrons start and finish where the electrons end up. For this reaction the lone pair of electrons on the oxygen from...

Answered by Hannah R. • Chemistry tutor

2158 Views

State an explain the result of an increase in temperature on the following equilibria: N2 (g) + 02 (g) <-> 2 NO (g) (delta H = +180kJmol-1)

An increase temperature favours the endothermic direction of an equilibrium reaction; this is because there is more energy in the surroundings to accommodate for the energy that will be taken into the sys...

Answered by Samuel G. • Chemistry tutor

2150 Views

Describe and explain the trend in boiling points in the first four hydrogen halides

HF has the highest boiling point this is followed by HI, then HBr with HCl having the lowest boiling point of the four molecules. This is because HF is able to form Hydrogen bonds whereas the other three ...

Answered by Theo M. • Chemistry tutor

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