Chemistry · Ethers: Structure
Which reagent can be used to convert ethanol to diethyl ether?
Which reagent can be used to convert ethanol to diethyl ether?
- A. \( A l_{2} O_{3} \) at \( 250^{\circ} C \)
- B. conc. \( H_{2} S O_{4} \) at \( 170^{\circ} C \)
- C. conc. \( H_{2} S O_{4} \) at \( 130^{0}-140^{0} C \)
- D. \( A l_{2} O_{3} \) at \( 350^{\circ} C \)
Step-by-step solution
Ethanol undergoes intermolecular dehydration with concentrated sulfuric acid at 130-140°C to form diethyl ether. At 170°C, intramolecular dehydration occurs to yield ethene. Al2O3 at 250°C also produces ether, but at 350°C it gives ethene. The standard laboratory method uses conc. H2SO4 at 140°C.
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