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Explain how dyes are separated by paper chromatography.

For the technique of chromatography, there are two 'phases', the stationary phase and the mobile phase. In paper chromatography, the stationary phase is the paper and the mobile phase is the water. The paper...
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Answered by Amy R. • Chemistry tutor
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What is the electronic structure of sulphur

2,8,6
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Answered by Hannah R. • 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 th...
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Answered by Hannah R. • Chemistry tutor
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Plan an experiment that would allow you to determine the maximum voltage that can be achieved using strips of lithium, zinc, copper and aluminium.

i) Pick electrolyte (e.g. hydrochloric acid) - strong acid ii) Use same volume of electrolyte; Use same electrolyte throughout; iii) Cut same size strips; Connect wire to each metal; Connect to voltmeter; iv...
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Answered by Baranse O. • Chemistry tutor
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List the three characteristic properties of reactant particles which affect the rate of reaction as described by the collision theory.

The frequency of collisionskinetic energy of particlescollision geometry (orientation)
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Answered by Alisa H. • Chemistry tutor
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