MCQ
Which one is known as oil of vitriol
  • A
    ${H_2}S{O_3}$
  • ${H_2}S{O_4}$
  • C
    ${H_2}{S_2}{O_7}$
  • D
    ${H_2}{S_2}{O_8}$

Answer

Correct option: B.
${H_2}S{O_4}$
b
Sulfuric acid whose chemical formula is $H _2 SO _4$ is called as "oil of vitriol" by medieval European chemists because it was prepared by roasting "green vitriol" (iron($II$) sulfate i.e. $FeSO _4$ ) in an iron container.

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