INTRODUCTION TO THE ARYL HALIDES (HALOGENOARENES)

ADDITION-ELIMINATION REACTIONS OF ALDEHYDES AND KETONES

Which gives addition reaction with aldehyde and ketone? What is addition-elimination reaction with example? Which reaction is a condensation or addition-elimination reaction? What is the mechanism involved in the reaction of aldehydes and ketones with 2 4 DNP?

ALKENES and POTASSIUM MANGANATE(VII)

This page looks at the reaction of the carbon-carbon double bond in alkenes such as ethene with potassium manganate(VII) solution (potassium permanganate solution). Oxidation of alkenes with cold dilute potassium manganate(VII) solution Experimental details Alkenes react with potassium manganate(VII) solution in the cold. The colour change depends on whether the potassium manganate(VII) is used under acidic or alkaline conditions. If the potassium manganate(VII) solution is acidified with dilute sulphuric acid, the purple solution becomes colourless. If the potassium manganate(VII) solution is made slightly alkaline (often by adding sodium carbonate solution), the purple solution first becomes dark green and then produces a dark brown precipitate. Chemistry of the reaction We'll look at the reaction with ethene. Other alkenes react in just the same way. Manganate(VII) ions are a strong oxidising agent, and in the first i...

PROPERTIES OF THE PERIOD 3 "HYDROXIDES"

This page looks briefly at how the chemistry of the "hydroxides" of the Period 3 elements from sodium to chlorine varies as you cross the period. I am taking the word "hydroxide" to include anything which contains either a hydroxide ion or an -OH group covalently bound to the element in question. You wouldn't usually think of some of the compounds on this page as hydroxides at all. A quick summary of the trends Sodium and magnesium hydroxides These contain hydroxide ions, and are simple basic hydroxides. Aluminium hydroxide Aluminium hydroxide, like aluminium oxide, is amphoteric - it has both basic and acidic properties. Note: I have no real idea of how to describe aluminium hydroxide on the ionic-covalent spectrum. Part of the problem is that there are several forms of aluminium hydroxide. For example, when it is prepared by adding ammonia solution to a solution containing hexaaquaalum...

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PERIODICITY