Multiple choice

Which of the following is NOT correctly matched?

  1. Caro's acid: H2S2O5

  2. Marshall's acid: H2S2O8

  3. Oil of vitriol: H2SO4

  4. Pyrosulphuric acid: H2S2O7

  5. Dithionic acid: H2S2O3

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Dithionic acid: H2S2O6 Sulphurous acid: H2S2O3