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4. Which of the following structural formulas represent the same compound? Н.с— сн, CH3 CH2CH2CH3 CH2 C-CH3 Hас- CH 2CH2 Нас-
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Answer #1

4.

i has only one methyl branch and five carbons in the longest chain. So, a total of six carbons.

ii has two methyl branches and five carbons in the longest chain. So, a total of seven carbons.

iii has no chains and seven carbons in the longest chain.

So, all of them are different.

5. Ethanol is more soluble in water because it has highly polarised O-H bond due to which it forms hydrogen bonding with water. Dimethyl ether is polar but there is no O-H bond. So, ethanol is more soluble.

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