KCET · Chemistry · Alcohols Phenols and Ethers
Which of the following can be used to test the acidic nature of ethanol?
- A \( \mathrm{NaHCO}_{3} \)
- B Na metal
- C Blue litmus solution
- D \( \mathrm{Na}_{2} \mathrm{CO}_{3} \)
Answer & Solution
Correct Answer
(B) Na metal
Step-by-step Solution
Detailed explanation
(B)
(1) With sodium metal, ethanol evolves \( \mathrm{H}_{2} \) gas.
(2) \( \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+\mathrm{Na} \rightarrow \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{ON} a+\mathrm{H}_{2} \)
(1) With sodium metal, ethanol evolves \( \mathrm{H}_{2} \) gas.
(2) \( \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+\mathrm{Na} \rightarrow \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{ON} a+\mathrm{H}_{2} \)
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