Question

H2SO2O7[i]+h2o(1)gives h2so4(1) balance the equation step wise

Answer 1

This is the process of formation of sulphuric acid
H₂SO₄ + SO₃(g) → H₂S₂O₇(l)

H₂S₂O₇(l) + H₂O(l) → 2H₂SO<sub>4

you can check more here:https://byjus.com/chemistry/mass-production-of-sulphuric-acid/</sub>