1A) This is a primary alcohol, and therefore
potassium dichromate acts as an oxidising agent. The initial
product would be an aldehyde called butan-1-al. However
to form only this you must distill it as it is formed. In
this case distilling did not occur. Further oxidation occurs
and the aldehyde is oxidised to the carboxylic acid Butan-1-oic
acid.
1B) Phosphorous pentachloride causes chlorination
of the alcohol, and is often used as a test for alcohols
as dense white fumes are formed. A mixture of products are
formed including 1-chorobutane, Phosphorous oxychloride,
and hydrogen chloride.
1c) This is an example of a dehydration
reaction in which water is removed from the alcohol. The
main organic product formed is But-1-ene.
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