Question

Choose those compounds from the following which can turn blue litmus solution red:
HCHO, CH₃COOH, CH₃OH, C₂H₅OH, HCOOH, CH₃CHO
Give reasons for your choice.

Answer 1

CH₃COOH (ethanoic acid) and HCOOH (formic acid) are the compounds which can turn blue litmus solution red. This happens because ethanoic acid and formic acid are the organic compounds which are acidic in nature.