Question

Какая цепь из этих углеводородных атомов самая длинная а) CH3-CH(CH3)-CH(CH3)-CH2-CH(CH3)-CH2-CH3 2,3,5-триметилгептан б) CH3-CH2-C(C2H5)₂-CH2-CH3 3,3-диэтилпентан в) CH3-CH(CH3)-C(C2H5)₂-CH2-CH2-CH3 2-метил-3,3-диэтилгексан г) CH3-CH2-CH2-C(CH3)₂-CH3 2,2-диметилпентан

Answer 1

Цепь в)CH3-CH(CH3)-C(C2H5)₂-CH2-CH2-CH3 2-метил-3,3-диэтилгексан

Answer 2

The longest chain of hydrocarbon atoms among the given options is 2,3,5-trimethylheptane (a).

To determine the longest chain, we need to count the number of carbon atoms in each option and choose the one with the highest count.

Let's analyze each option:

a) CH3-CH(CH3)-CH(CH3)-CH2-CH(CH3)-CH2-CH3 (2,3,5-trimethylheptane) - This option has 7 carbon atoms in the longest chain.

b) CH3-CH2-C(C2H5)₂-CH2-CH3 (3,3-diethylpentane) - This option has 5 carbon atoms in the longest chain.

c) CH3-CH(CH3)-C(C2H5)₂-CH2-CH2-CH3 (2-methyl-3,3-diethylhexane) - This option has 6 carbon atoms in the longest chain.

g) CH3-CH2-CH2-C(CH3)₂-CH3 (2,2-dimethylpentane) - This option has 5 carbon atoms in the longest chain.

Therefore, the longest chain of hydrocarbon atoms among the given options is 2,3,5-trimethylheptane (a) with 7 carbon atoms in the longest chain.