Why nitric acid causes the steel surface passivation but sulfuric acid doesn't have this property?

Ali Asghar Javidparvar @Ali_Asghar_Javidparvar

03 March 2016 1 10K Report

I Think that concenrated sulphuric acid pasivate steel. I don't remember value of threshold concenration but it is about 60-65% by weight.

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