Which of the following pairs of substances can be distinguished by use of NaHCO3 solution?
Answer Details
NaHCO3 solution is commonly used as a test for carboxylic acids. When a carboxylic acid is added to NaHCO3 solution, it reacts to produce carbon dioxide gas, water, and a sodium carboxylate salt. Therefore, the pair of substances that can be distinguished by use of NaHCO3 solution is: - CH3CH2OH and CH3COOH CH3CH2OH is ethanol, which is not a carboxylic acid, and therefore does not react with NaHCO3 solution. CH3COOH is ethanoic acid, which is a carboxylic acid, and reacts with NaHCO3 solution to produce carbon dioxide gas. The other options cannot be distinguished using NaHCO3 solution because they do not involve carboxylic acids.