Organic chemistry quiz 12:Chemical properties of alcohols. To : Detection of phenol

#1. (13) Ethanol reacts with hydrochloric acid, while phenol doesn't react

a)Because hydroxyl group is removed easily from alcohol while it is difficult to remove from phenols

b)because carbinol group is removed easily from alcohol while it is difficult to remove from phenols

c)Because hydroxyl group is difficult to remove from alcohol while it is easily to remove from phenols

d)a and b

#2. (14) The acidity of phenol is more than that of ethanol.

a)because benzene ring increases the length of (O-H) bond so its ( H) is not separated easily while alkyl group of alcohol decreases the length of O-H bond so it is difficult to separate (H)

b)because benzene ring decreases the length of (O-H) bond so its ( H) is separated easily while alkyl group of alcohol decreases the length of O-H bond so it is difficult to separate (H)

c)Because benzene ring increases the length of (O-H) bond so its ( H) is separated easily while alkyl group of alcohol decreases the length of O-H bond so it is difficult to separate (H)

d)because benzene ring increases the length of (C-H) bond so its ( H) is separated easily while alkyl group of alcohol decreases the length of O-H bond so it is difficult to separate (H)

#3. (15) It is impossible to eliminate hydroxyl group from phenol when it reacts with acids

a)because benzene ring makes the bond between carbon atoms in phenol and hydrogen atom of hydroxyl more shorter and stronger

b)because benzene ring makes the bond between carbon atoms in phenol and Hydrogen atom of hydroxyl more shorter and stronger

c)because benzene ring makes the bond between carbon atoms in phenol and oxygen atom of hydroxyl more longer and weaker

d) Because benzene ring makes the bond between carbon atoms in phenol and oxygen atom of hydroxyl more shorter and stronger

Organic chemistry quiz 12:Chemical properties of alcohols. To : Detection of phenol

Results

#1. (13) Ethanol reacts with hydrochloric acid, while phenol doesn't react

#2. (14) The acidity of phenol is more than that of ethanol.

#3. (15) It is impossible to eliminate hydroxyl group from phenol when it reacts with acids