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In the sequence below, determine the species represented by x and y: 2H2SO4(aq) —electrolysis→ x —hydrolysis→ y + 2H+(aq) + H2O2(aq)

1. x = H2SO4(aq), y = 2H2SO4(aq)
2. x = H2SO3SO3H(aq), y = 2H2SO3(aq)
3. x = H2SO3SO3H(aq), y = H2SO4(aq)
4. x = H2SO4(aq), y = H2SO3SO3H(aq)

Correct answer: x = H2SO3SO3H(aq), y = H2SO4(aq)

Solution

The correct option indicates that during the electrolysis of sulfuric acid (H2SO4), it is converted into a different species (H2SO3SO3H), which upon hydrolysis yields sulfuric acid (H2SO4) and other products. This reflects the chemical transformations occurring in the sequence.

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