Use H = 1, O = 16. 3.4 g of H2O2 acts as a reducing agent (H2O2 -> O2). The number of equivalents of H2O2 is:

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Use H = 1, O = 16. $3.4 g$ of $H X_{2} O X_{2}$ acts as a reducing agent ( $H X_{2} O X_{2} O X_{2}$ ). The number of equivalents of $H X_{2} O X_{2}$ is:

Moles

= 3.4/34 = 0.1

. Oxygen goes from

- 1

0

in each of 2 atoms, so

n = 2

. Equivalents

= 0.1 \times 2 = 0.2