[infinity1]

I did an experiment where I took extracted C6H5COOH (benzoic acid) from H2O using CH2Cl2. After extraction, I titrated the benzoic acid with NaOH solution. The titration was a light pink, which indicated the acidity of the solution.

The question is: Write the balanced equation for the reaction that occured when you titrated the aqueous layer with NaOH solution.

How do I write this?

If I have to take into consideration the CH2Cl2 and the water, I ended up with something like this:

C6H5COOH + H2O + CH2Cl2 + NaOH --> C6H5COOH + NaOH
where the H2O and CH2Cl2 were removed in order for the NaOH titration to happen.

Is this right? I am not sure. The end product in the experiment is benzoic acid.


Please reply soon. Any help will be greatly appreciated. Thanks.

[Borek]

C6H5COOH + NaOH --> C6H5COOH

This is neutralization reaction - so you should have salt and water on the right side.

CH2Cl2 and water should be ignored - they don't take part in the reaction (other then water being product).

[infinity1]

Would it look like this:

2 C6H5COOH --> C6H5COOH + NaOH

I did not add water in because both this and CH2Cl2 were removed in order for the titration to proceed, so they don't reallly belong as part of the reaction.

[Borek]

Where is a salt?

What you have wrote is not a reaction equation, even skeletal.

[plu]

The titration was a light pink, which indicated the acidity of the solution.

This completely depends on the indicator you are using.  Not all acidic solutions are light pink  

[arnyk]

I'm a little rusty, but I think the resultant salt produced is a common food preservative?

[Borek]

I'm a little rusty, but I think the resultant salt produced is a common food preservative?

Not sure if it is still in use, but I remember jars with statement "conserved with ..." from my childhood.

[arnyk]

I guess Canada has less stringent food additive rules.

[Borek]

I guess Canada has less stringent food additive rules.

Compared to Polish ones ?

[infinity1]

Where is a salt?

What you have wrote is not a reaction equation, even skeletal.

Then how would you suggest I write it? I have listed every compound used in the experiment. They are C6H5COOH, H2O, NaOH, and CH2Cl2. The salt is NaOH, so I do not know what else you are looking for.

Can someone please guide me through this with constructive suggestions? Thank you.

[infinity1]

This completely depends on the indicator you are using.  Not all acidic solutions are light pink  

Yes, that is true. This is why I said in my first post that I did a titration of C6H5COOH using NaOH. I did not use a standard pH indicator.

[infinity1]

Does anyone know how to do this problem???

I asked a serious question and this thread went completely off base. Someone please provide some constructive guidance.

[Borek]

The salt is NaOH, so I do not know what else you are looking for.

NaOH is not a salt. It is very basic fact.

[arnyk]

NaOH is not a salt. It is very basic fact.

Chemical pun?  Nice.  

infinity can you determine the products from this neutralization reaction:

C6H5COOH + NaOH -->