neutralization

Question

CaCO3+2HNO3---->Ca(NO3)2+H20+CO2

neutralization既definition唔系acid+base會只系出H20同埋SALT咩?

咁點解以上既chemical equation出左CO2都系neutralization既?

同埋可唔可以詳細闡述titration既步驟同埋如何清洗工具?

Answer 1

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Definition for neutralization should be : A non-redox reaction between an acid and base, where these acid and base can be Arrhenius, Bronsted Lowery, and Lewis acid or base .

For your reaction, CaCO3 is an Bronsted Lowery acid and HNO3 is a Bronsted Lowery base, so their reaaction is neutralization.Whether CO2 is

formed is not important.

Bronsted Lowery acid : A proton donator

Bronsted Lowery base: A proton accepter

Lewis acid : A electron acceptor without changing its oxidation number

Lewis base: A electron donator without changing its oxidation number

Arrhenius acid : A chemical that will give H+ when dissolved in water

Arrhenius base: A chemical that will give OH- when dissolved in water

A chemical can belongs to more than one type of acid or base

e.g. H2O is a acid and a base. It act as acid when donate proton while act as base when accept proton.

H2O +H2O -> H3O+ + OH-

donate H+ accept H+ after accept H+ after donate

Example:

NH3 +BF3->NH3BF3 is also a neutralization.

NH3 is a Lewis base, while BF3 is a Lewis acid.

Your definition can be found on some CE textbook but it is not correct.

My definition is just a conclusion from my obsevation on AL chem reaction and definitions, but may be not exactly correct.