The most dangerous or import acid is sulphuric acid.Sulpuric acid iri dangerouse ende inogadzirwa nethemost toxic gas in the world ichinzi sulphur trioxide. Sulphur ielement rinogadzira sulphur trioxide zvinoitika ndezvekuti sulphur rinobviriswa ritonga kubuda blue flame parinobuda blue flame ririkucombiner neoxygen kubvira kwaririkuita.Gas, parinoenda mudenga rinocombiner neoxygen futi, kuti riite sulphur trioxide