Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Caustic Embrittlement: Caustic embrittlement is a type of boiler corrosion caused by using highly alkaline water in the boiler. During softening process by lime-soda processes, free Na2CO3 is usually present in small proportion in the softening of water. In high pressure boilers, Na2CO3 decomposes to give sodium hydroxide and carbon-dioxide.
Na2CO3 + H2O = 2NaOH + CO2
And this makes boiler water "Caustic". The NaOH containing water flows into the minute hair cracks, always present in the inner side of boiler, by capillary action. Here water evaporated and the dissolved caustic soda concentration increases progressively. This caustic soda attacks the surrounding area, thereby dissolving iron of boiler as sodium ferrate. This causes embrittlement of boiler parts, causing even failure of the boiler. Caustic cracking can be explained by considering the following concentration cell. The iron surrounded by the dilute NaOH becomes the cathodes sides, which the iron in contact with concentrated NaOH becomes anodic part, which is consequently dissolved or corroded.
conclusion for assignment on topic applications of colloids
Side chain - nomenclature of simple aromatic compounds The alkyl or any other aliphatic group consisting of at least one carbon atom attached to the nucleus is termed as side c
Alkali metals belong to S-block ? why?
what is surface chemistry?
Explain The bromonium ion The bromonium ion derived from the reaction of cyclopentene with bromine undergoes backside substitution by water to give the trans-bromohydrin, whic
Which of the following has the least energy: (1) 2p (2) 3p (3) 2s (4) 4d Ans: 2s
Which of the following set of quantum number is not possible: n l m1 m2 (a) 3 2 1
what is definaion of leveling effect
can i have some problems regarding law of conservation of mass
Preparation of chemical reagents I. Purpose of the Experiment A reagent is any substance in a chemical reaction. Different reagents are used for laboratory experiments
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd