Chemistry ! 1) name the following compound: (pictures below are in order with the questions) 2-ethylpentane 4-ethylpentane 3-methylpentane 3-methylhexane 2) name the following compound: 2-methyl-3-butane 2-methyl-2-butene 3-methyl-2-butene 2-methyl-2-butyne 3) name the following compound: 4-ethyl-6-dodyne 3-propyl-5-nonyne 7-ethyl-4-dodyne 7-propyl-4-nonyne 4) name the following compound: 2-methyl-3-ethylbutane 2-methyl-3-methylpentane 2,3-dimethylpentane 2,3-methylpentane 5) name the following compound: ch3 – ch2 – ch2 – ch2 – oh 1-butane 1-butanol 4-butanol butanol 6) name the following compound: ch3 – ch2 – ch2 – o – ch2 – ch2 – ch2 – ch3 butyl propyl ether propyl butyl ether 3-butyl propyl ether 4-propyl butyl ether

1) is called 3-methyl hexane because we choose the longest possible continuous chain which has 6 carbons and start numbering from the side that gives the branch lowest possible number.

2) is called 2-methyl-2-butene because we have to give the double bond lowest possible number but in this case double bond in position 2 from both sides so we start from the side gives the branch number 2 not 3

3)  is called 7-Ethyl-4-decyne because we have to start from the side that gives the triple bond lowest possible number which is 4 and the branch will be at position 7 (note that the name of 10 carbon is incorrectly written in the choices is called decane (as alkane) or decyne when contains triple bond)

4) is called 2,3-Dimethyl pentane because it is 5 carbons (pentane) and we have two branches of the same alkyl (dimethyl) in positions 2 and 3

5) is called 1-Butanol because it contains 4 carbons and has one OH as functional group which take the suffix -ol in position 1 so we said the name as 1-butanol (remember to give the functional group lowest possible number)

6) is called propyl butyl ether because the longest chain is 4 carbons which called butyl and the smallest chain is propyl, it also has another name 1-Propoxy butane