Question

In: Chemistry

Item 11 Predict the result of reacting each compound with Lucas test and chromic acid respectively....

Item 11 Predict the result of reacting each compound with Lucas test and chromic acid respectively.

Part D

hexan-1-ol

a. no reaction, no reaction

b. instantly cloudy; no reaction

c. no reaction; blue-green color change

d. instantly cloudy; blue-green color change

Part E

cyclohexanol

a. instantly cloudy; blue-green color change
b. cloudy in 1-5 min; no reaction
c. cloudy in 1-5 min; blue-green color change
d. instantly cloudy; no reaction

Part F

allyl alcohol

a. instantly cloudy; no reaction
b. no reaction; blue-green color change
c. instantly cloudy; blue-green color change
d. no reaction; no reaction

Solutions

Expert Solution

(D)

Hexan-1-ol + lucas reagent ---------> no reaction, (because of less reactivity of primary alcohol due to formation of less stability of primary carbocation intermediate)

Hexan-1-ol + Chromic acid --------------> hexanoicacid, so color change from blue - green

(E)

Cyclohexanol + lucas reagent --------->cloudy in 1-5 min, (because of moderate reactivity of secondary alcohol due to formation of moderate stability of secondary carbocation intermediate)

Cyclohexanol + Chromic acid --------------> cyclohexanone, so color change from blue - green

(F)
Allyl alcohol + Lucas reagent -------------> Instantly cloudy ( because of more stable allyl carbocation intermediate)

Allyl alcohol + Chromic acid ----------> 2-propenal ( blue-green color change)

queen_honey_blossom answered 2 years ago
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