Alcohols & Ethers 0.0 / 5 ? ChemistryWhat's in a medicine?A2/A-levelOther Created by: J.E.C.Created on: 11-04-14 11:18 What functional group do all ethers contain? -OR (alkoxy) 1 of 22 Isomeric alcohols are possible for alcohols containing more than __ Carbons? 2 2 of 22 What are alcohols containing more than one OH group called? polyhydric 3 of 22 Alcohol molecules are polar because of the polarised ___ bond? O-H 4 of 22 In terms of hydrogen bonding, what would the partial charge be on the oxygens and hydrogens? O: - H:+ 5 of 22 Why are the boiling points of alcohols higher than those of corresponding alkanes with similar RAM? Strong hydrogen bonds hold the molecules together - more energy required to break these bonds for the liquid to become a gas. 6 of 22 Give the position of the OH group in primary alcohols? At the end of the chain 7 of 22 Give the position of the OH group in secondary alcohols? In the middle of the chain 8 of 22 Give the position of the OH group in tertiary alcohols? Attached to a Carbon atom which carries no H atoms. 9 of 22 Alcohols are usually oxidised by heating with....? acidified solution of potassium dichromate 10 of 22 What colour change would you observe? Orange > Green 11 of 22 Oxidation of the OH group will only occur if...? there is a H atom attached to the C atom to which the OH is attached 12 of 22 In oxidation of an alcohol, two Hydrogen's are removed, one from the ___ atom and one from the ___ atom? oxygen, carbon 13 of 22 Primary alcohols oxidise to...? aldehydes (can be distilled out) - then oxidised to a carboxylic acid 14 of 22 Secondary alcohols oxidise to...? ketones 15 of 22 Many alcohols can lose ___ to form an alkene? A molecule of water 16 of 22 Alcohols can be dehydrated by heating with...? Concentrated sulphuric acid 17 of 22 Dehydration is an example of an elimination reaction, define elimination reaction? Reaction in which a small molecule is removed from a larger molecule, leaving am unsaturated molecule. 18 of 22 How would you name an ether? Smallest alkane chain first (eth) then oxy then longest alkane chain (ethane) e.g. ethoxyethane 19 of 22 Ether molecules are slightly ___ and the attractive forces between molecules are ___? polar, relatively weak 20 of 22 Ethers cannot H bond because...? There are no H atoms attached to the oxygen 21 of 22 Ethers are slightly soluble in water but mix well with...? Other non-polar molecules (eg alkanes) 22 of 22
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