Question

What is the formula of Marshalls acid?

• A. $H_2S_2O_8$
• B. $H_2SO_4$
• C. $H_2S_2O_6$
• D. $H_2SO_5$

Answer 1

Answer: (A)

$H_2S_2O_8$

Answer 2

The correct option is (A): $H_2S_2O_8$.