Proof is twice the percentage by volume of ethanol in

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“Proof” is twice the percentage (by volume) of ethanol in the liquid, the rest being water. So, if a drink is 10% ethanol, it is 20 Proof. A 50% (v/v) ethanol solution in water is still flammable! Any less and it does not ignite readily. This was “proof” that the drink still had at least 50% ethanol if it burned. A scale was developed and this minimum concentration was set at 100 Proof. Pure ethanol is what Proof?
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Chemical Reactions of Alcohols Inter molecular dehydration reaction – this is the removal of water from different molecules (–H from one and –OH from another). This is also known as a condensation reaction. This easily occurs with 1° alcohols, NOT 2° and 3° alcohols!!! H 2 SO 4 140°C + + ether bond
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Ethers Ethers are organic compounds in which two carbon atoms are bridged by a single oxygen atom with two single bonds. water alcohol ether
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Ether Nomenclature Ether common names Rule 1: For symmetrical ethers, name the alkyl group with the prefix di- , then add the word ether with a space between. Rule 2: For asymmetrical ethers, name each alkyl group in alphabetical order with a space between, then add the work ether .
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Ether Nomenclature IUPAC names are needed for more complex alkyl groups: Rule 1: Name the larger (longer) of the two alkyl groups as usual for the parent chain.
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