What makes an acid more corrosive?

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What makes an acid more corrosive?

Postby tonyhu » Fri Dec 06, 2019 6:42 pm

I heard that concentration did not matter?

Jason Wu 1E
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Joined: Thu Jul 25, 2019 12:15 am

Re: What makes an acid more corrosive?

Postby Jason Wu 1E » Fri Dec 06, 2019 7:32 pm

An acid is more corrosive when the pKa is lower (or Ka is higher) or is a strong acid. Corrosion happens when a lewis acid gains electron pairs from metal atoms. This makes the metal atoms positively charged, in order to counteract that the metal cation will be oxidized with surrounding oxygen and undergo a chemical reaction as it corrodes.

Rohit Srinivas 2D
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Joined: Wed Sep 30, 2020 9:52 pm

Re: What makes an acid more corrosive?

Postby Rohit Srinivas 2D » Sun Dec 06, 2020 10:11 pm

I believe the reason concentration doesn't matter is because when the concentration is very high there won't be enough water to be protonated and participate in the reaction, at a dilute concentration there will be enough water to do so. Also both bases and acids are corrosive, not just acids.

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