When iron(II) oxalate (oxalate=ox²⁻) is treated with H₂O₂, H₂ox and K₂ox, a green compound X is obtained. X reacts with aqueous NaOH to give hydrated Fe₂O₃, and is decomposed by light with production of iron(II) oxalate, K₂ox and CO₂. Analysis of X shows it contains 11.4% Fe and 53.7% ox²⁻. Deduce the formula of X and write equations for its reaction with alkali and its photochemical decomposition. State, with reasons, whether you would expect X to be chiral.