lnarayan
Jul 15, 2010, 04:19 AM
kmno4 + naoh + fe+h2o= ? We wanted to know what is the reactionand end products with balancing the equation
lnarayan
Jul 15, 2010, 04:22 AM
KMnO4 + NaOH
Why this the combination of the above bath is used for descaling of alloy steels
Unknown008
Jul 18, 2010, 08:11 AM
You should know that KMnO4 is an oxidising agent. This, in alkaline medium will oxidise all the Fe^2+ formed from rusting to soluble Fe^3+. This soluble Fe^3+ will then react with NaOH to form the insoluble Fe(OH)3. You can now wipe this off, leaving only the Fe metal under.