Neutralization rx

[SaintJude]

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Ca(OH)2 + CO2 --> CaCO3 + H2O

How do I know that this is a neutralization reaction?

I mean, I know calcium hydroxide is a strong base...

 

[typicalindian]

I think the key marker of the neutralization reactions is that you form a neutral salt and water.

 

[SaintJude]

I think the key marker of the neutralization reactions is that you form a neutral salt and water.

I guess I though that caco3 is slightly basic....it's not? why ?

 

[chiddler]

I guess I though that caco3 is slightly basic....it's not? why ?

This is an interesting look at acid/base reactions.

HAc + NaOH --> NaAc + H2O

Sodium acetate is a weak base, too. But more specifically, it is a salt. So it fits with the definition. Start with acid/base, end with salt. Not necessarily neutral.

 

[SaintJude]

Ok, thanks. I think the problem was that I didn't know that carbon dioxide is acidic.

The original question was

If stoichiometric amounts of calcium hydroxide solution were used in Experiment 3 (the OP rx), the final solution would be:

A. neutral.
B. acidic.
C. basic.
D. Cannot be determined

 

[MedPR]

The production of water is a pretty big hint as well. If the final solution was basic or acidic, you would probably produce OH- or H3O+ as well as the salt.

 

[SaintJude]

The production of water is a pretty big hint as well. If the final solution was basic or acidic, you would probably produce OH- or H3O+ as well as the salt.

Ah, yeah, you're so right. Thanks a lot! That's something I can apply for ID'ing of future neutralization rx.